diff --git a/src/auth/cellconfig.c b/src/auth/cellconfig.c
index 8b6915f021..9d9d228376 100644
--- a/src/auth/cellconfig.c
+++ b/src/auth/cellconfig.c
@@ -138,7 +138,7 @@ afsconf_fopen(const char *fname, const char *fmode)
     iop->buffer = malloc(BUFFER);
     if (iop->buffer == NULL) {
 	(void) close(fd);
-	free((void *) iop);
+	free(iop);
 	errno = ENOMEM;
 	return NULL;
     }
@@ -154,8 +154,8 @@ afsconf_fclose(afsconf_FILE *iop)
 	return 0;
     }
     close(iop->_file);
-    free((void *)iop->buffer);
-    free((void *)iop);
+    free(iop->buffer);
+    free(iop);
     return 0;
 }
 
diff --git a/src/bucoord/commands.c b/src/bucoord/commands.c
index b4de99441b..ea8b9c0400 100644
--- a/src/bucoord/commands.c
+++ b/src/bucoord/commands.c
@@ -353,7 +353,7 @@ EvalVolumeSet2(struct bc_config *aconfig,
 
 	    /* Free memory allocated during VL call */
 	    if (bulkentries.nbulkentries_val) {
-		free((char *)bulkentries.nbulkentries_val);
+		free(bulkentries.nbulkentries_val);
 		bulkentries.nbulkentries_val = 0;
 		entries = 0;
 	    }
@@ -366,7 +366,7 @@ EvalVolumeSet2(struct bc_config *aconfig,
 
   error_exit:
     if (bulkentries.nbulkentries_val) {
-	free((char *)bulkentries.nbulkentries_val);
+	free(bulkentries.nbulkentries_val);
     }
     return (code);
 }				/*EvalVolumeSet2 */
diff --git a/src/budb/server.c b/src/budb/server.c
index d78b2822fc..4090edb844 100644
--- a/src/budb/server.c
+++ b/src/budb/server.c
@@ -307,7 +307,7 @@ parseServerList(struct cmd_item *itemPtr)
 	ERROR(code);
 
     /* free space for the server args */
-    free((char *)serverArgs);
+    free(serverArgs);
 
   error_exit:
     return (code);
diff --git a/src/libadmin/cfg/cfgdb.c b/src/libadmin/cfg/cfgdb.c
index 9f946b953d..b68db54f29 100644
--- a/src/libadmin/cfg/cfgdb.c
+++ b/src/libadmin/cfg/cfgdb.c
@@ -341,8 +341,8 @@ int ADMINAPI
 cfg_CellServDbStatusDeallocate(cfg_cellServDbStatus_t * statusItempP,
 			       afs_status_p st)
 {
-	if ( statusItempP )
-		free((void *)statusItempP);
+    if ( statusItempP )
+	free(statusItempP);
 
     if (st != NULL) {
 	*st = 0;
diff --git a/src/libadmin/cfg/cfghost.c b/src/libadmin/cfg/cfghost.c
index bdf152e669..5c40e23662 100644
--- a/src/libadmin/cfg/cfghost.c
+++ b/src/libadmin/cfg/cfghost.c
@@ -1206,7 +1206,7 @@ int ADMINAPI
 cfg_StringDeallocate(char *stringDataP,	/* (multi)string to deallocate */
 		     afs_status_p st)
 {				/* completion status */
-    free((void *)stringDataP);
+    free(stringDataP);
     if (st != NULL) {
 	*st = 0;
     }
@@ -1222,7 +1222,7 @@ int ADMINAPI
 cfg_PartitionListDeallocate(cfg_partitionEntry_t * partitionListDataP,
 			    afs_status_p st)
 {
-    free((void *)partitionListDataP);
+    free(partitionListDataP);
     if (st != NULL) {
 	*st = 0;
     }
diff --git a/src/lwp/lwp_nt.c b/src/lwp/lwp_nt.c
index c37baebda4..5bfb553c2f 100644
--- a/src/lwp/lwp_nt.c
+++ b/src/lwp/lwp_nt.c
@@ -231,7 +231,7 @@ int LWP_CreateProcess(int (*funP)(), int stacksize, int priority, void *argP,
 
     pcb->fiber = CreateFiber(stacksize, Enter_LWP, pcb);
     if (pcb->fiber == NULL) {
-	free((void*)pcb);
+	free(pcb);
 	return LWP_EINIT;
     }
     Debug(0, ("Create: pcb=0x%p, funP=0x%p, argP=0x%p\n", pcb, funP, argP))
@@ -622,8 +622,8 @@ static void Free_PCB(PROCESS pid)
     if (pid->fiber != NULL) {
 	DeleteFiber(pid->fiber);
     }
-    if (pid->eventlist != NULL)  free((void*)pid->eventlist);
-    free((void*)pid);
+    if (pid->eventlist != NULL)  free(pid->eventlist);
+    free(pid);
 }
 
 static void Dispose_of_Dead_PCB(PROCESS cur)
diff --git a/src/lwp/test/selsubs.c b/src/lwp/test/selsubs.c
index f3403a155e..0567851df3 100644
--- a/src/lwp/test/selsubs.c
+++ b/src/lwp/test/selsubs.c
@@ -46,7 +46,7 @@ IOMGR_AllocFDSet(void)
 void
 IOMGR_FreeFDSet(fd_set * fds)
 {
-    free((char *)fds);
+    free(fds);
 }
 #endif
 
diff --git a/src/ptserver/map.c b/src/ptserver/map.c
index 9c74bc8df7..ec94a10cb3 100644
--- a/src/ptserver/map.c
+++ b/src/ptserver/map.c
@@ -196,7 +196,7 @@ simplify_bitmap(struct bitmap *map)
 		   mp2->m_page);
 #endif
 	    *mpp = mp2->m_next;
-	    free((char *)mp2);
+	    free(mp2);
 	} else
 	    mpp = &mp2->m_next;
     }
@@ -214,7 +214,7 @@ or_bitmap(struct bitmap *left, struct bitmap *right)
 		for (i = 0; i < MDATA; ++i)
 		    lmap->m_data[i] |= rmap->m_data[i];
 		*rightmp = rmap->m_next;
-		free((char *)rmap);
+		free(rmap);
 		break;
 	    }
     }
@@ -237,14 +237,14 @@ and_bitmap(struct bitmap *left, struct bitmap *right)
 		for (i = 0; i < MDATA; ++i)
 		    sig |= (lmap->m_data[i] &= rmap->m_data[i]);
 		*rightmp = rmap->m_next;
-		free((char *)rmap);
+		free(rmap);
 		break;
 	    }
 	if (rmap && sig) {
 	    leftmp = &lmap->m_next;
 	} else {
 	    *leftmp = lmap->m_next;
-	    free((char *)lmap);
+	    free(lmap);
 	}
     }
     free_map((struct map *)right);
@@ -270,14 +270,14 @@ bic_bitmap(struct bitmap *left, struct bitmap *right)
 		for (i = 0; i < MDATA; ++i)
 		    sig |= (lmap->m_data[i] &= ~rmap->m_data[i]);
 		*rightmp = rmap->m_next;
-		free((char *)rmap);
+		free(rmap);
 		break;
 	    }
 	if (!rmap || sig) {
 	    leftmp = &lmap->m_next;
 	} else {
 	    *leftmp = lmap->m_next;
-	    free((char *)lmap);
+	    free(lmap);
 	}
     }
     free_map((struct map *)right);
diff --git a/src/ptserver/pts.c b/src/ptserver/pts.c
index b6601d6d7e..f38daac5db 100644
--- a/src/ptserver/pts.c
+++ b/src/ptserver/pts.c
@@ -123,7 +123,7 @@ popsource(void)
 	fclose(source);
     source = sp->s_file;
     shead = sp->s_next;
-    free((char *)sp);
+    free(sp);
     return 1;
 }
 
diff --git a/src/util/readdir_nt.c b/src/util/readdir_nt.c
index 18fb4d4f81..7a18f0134f 100644
--- a/src/util/readdir_nt.c
+++ b/src/util/readdir_nt.c
@@ -96,7 +96,7 @@ closedir(DIR * dir)
 
     if (dir->h != INVALID_HANDLE_VALUE)
 	FindClose(dir->h);
-    free((void *)dir);
+    free(dir);
     return 0;
 }
 
diff --git a/src/vfsck/inode.c b/src/vfsck/inode.c
index d4e902c734..58fc980e47 100644
--- a/src/vfsck/inode.c
+++ b/src/vfsck/inode.c
@@ -354,9 +354,9 @@ inocleanup()
     if (inphead == NULL)
 	return;
     for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--)
-	free((char *)(*inpp));
-    free((char *)inphead);
-    free((char *)inpsort);
+	free(*inpp);
+    free(inphead);
+    free(inpsort);
     inphead = inpsort = NULL;
 }
 #endif
diff --git a/src/vfsck/main.c b/src/vfsck/main.c
index 408f8f7a93..55bb12ba8e 100644
--- a/src/vfsck/main.c
+++ b/src/vfsck/main.c
@@ -893,7 +893,7 @@ checkfilesys(filesys, parname)
     ckfini();
     free(blockmap);
     free(statemap);
-    free((char *)lncntp);
+    free(lncntp);
     lncntp = NULL;
     blockmap = statemap = NULL;
 #ifdef	AFS_SUN5_ENV
diff --git a/src/vfsck/pass4.c b/src/vfsck/pass4.c
index fd7d51962d..86c8a214c4 100644
--- a/src/vfsck/pass4.c
+++ b/src/vfsck/pass4.c
@@ -96,7 +96,7 @@ pass4()
 			zlnp->zlncnt = zlnhead->zlncnt;
 			zlnp = zlnhead;
 			zlnhead = zlnhead->next;
-			free((char *)zlnp);
+			free(zlnp);
 			clri(&idesc, "UNREF", 1);
 			break;
 		    }
@@ -176,7 +176,7 @@ pass4check(idesc)
 		dlp->dup = duplist->dup;
 		dlp = duplist;
 		duplist = duplist->next;
-		free((char *)dlp);
+		free(dlp);
 		break;
 	    }
 	    if (dlp == 0) {
diff --git a/src/vfsck/utilities.c b/src/vfsck/utilities.c
index 4b8dd440df..1249bcb80d 100644
--- a/src/vfsck/utilities.c
+++ b/src/vfsck/utilities.c
@@ -364,7 +364,7 @@ ckfini()
 	flush(fswritefd, bp);
 	nbp = bp->b_prev;
 	free(bp->b_un.b_buf);
-	free((char *)bp);
+	free(bp);
     }
 #ifdef	AFS_SUN5_ENVX
     pbp = pdirbp = NULL;
diff --git a/src/viced/host.c b/src/viced/host.c
index 0102da476e..54d9604fa1 100644
--- a/src/viced/host.c
+++ b/src/viced/host.c
@@ -999,7 +999,7 @@ h_Enumerate(int (*proc) (struct host*, void *), void *param)
 	}
 	H_UNLOCK;
     }
-    free((void *)list);
+    free(list);
 }	/* h_Enumerate */
 
 
diff --git a/src/vlserver/vlclient.c b/src/vlserver/vlclient.c
index 7d55e7bed7..ee6b554310 100644
--- a/src/vlserver/vlclient.c
+++ b/src/vlserver/vlclient.c
@@ -535,7 +535,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 		for (i = 0; i < nentries; i++, entry++)
 		    display_entry(entry, 0);
 		if (entries.bulkentries_val)
-		    free((char *)entries.bulkentries_val);
+		    free(entries.bulkentries_val);
 	    } else if (!strcmp(oper, "lan2")) {
 		int nentries, i, si, nsi, t = 0;
 		nbulkentries entries;
@@ -572,7 +572,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 		    for (i = 0; i < nentries; i++, entry++)
 			display_entryN(entry, 0);
 		    if (entries.nbulkentries_val)
-			free((char *)entries.nbulkentries_val);
+			free(entries.nbulkentries_val);
 		}
 		printf("--- %d volumes ---\n", t);
 	    } else if (!strcmp(oper, "ln")) {
@@ -617,7 +617,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 		for (vllist = linkedvldbs.node; vllist; vllist = vllist1) {
 		    vllist1 = vllist->next_vldb;
 		    display_entry((struct vldbentry *)&vllist->VldbEntry, 0);
-		    free((char *)vllist);
+		    free(vllist);
 		}
 	    } else if (!strcmp(oper, "di")) {
 		sscanf(&(*argp)[0], "%d", &id);
@@ -743,7 +743,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 			printf("[0x%x %u] %s\n", *addrp, *addrp,
 			       hostutil_GetNameByINet(ntohl(*addrp)));
 		}
-		free((char *)addrs.bulkaddrs_val);
+		free(addrs.bulkaddrs_val);
 	    } else if (!strcmp(oper, "gau")) {
 		int nentries, i, j;
 		afs_uint32 *addrp;
@@ -799,13 +799,13 @@ handleit(struct cmd_syndesc *as, void *arock)
 				   hostutil_GetNameByINet(mhaddrp[j]));
 			}
 			if (mhaddrs.bulkaddrs_val)
-			    free((char *)mhaddrs.bulkaddrs_val);
+			    free(mhaddrs.bulkaddrs_val);
 		    } else {
 			printf("[0x%x %u] %s\n", *addrp, *addrp,
 			       hostutil_GetNameByINet(ntohl(*addrp)));
 		    }
 		}
-		free((char *)addrs.bulkaddrs_val);
+		free(addrs.bulkaddrs_val);
 	    } else if (!strcmp(oper, "mhc")) {
 		afs_uint32 serveraddrs[MAXSERVERID + 1][VL_MAXIPADDRS_PERMH];
 		afs_int32 serveraddrtype[MAXSERVERID + 1];
@@ -860,7 +860,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 			for (j = 0; j < nentries2; j++) {
 			    serveraddrs[i][j] = ntohl(addrp2[j]);
 			}
-			free((char *)addrs2.bulkaddrs_val);
+			free(addrs2.bulkaddrs_val);
 		    }
 
 		    if (nargs) {
@@ -875,7 +875,7 @@ handleit(struct cmd_syndesc *as, void *arock)
 			}
 		    }
 		}
-		free((char *)addrs1.bulkaddrs_val);
+		free(addrs1.bulkaddrs_val);
 
 		/* Look for any duplicates */
 		for (i = 0; i < MAXSERVERID + 1; i++) {
diff --git a/src/vlserver/vlprocs.c b/src/vlserver/vlprocs.c
index 6868edba12..aebc95cda4 100644
--- a/src/vlserver/vlprocs.c
+++ b/src/vlserver/vlprocs.c
@@ -1760,7 +1760,7 @@ SVL_ListAttributesN2(struct rx_call *rxcall,
 	countAbort(this_op);
 	ubik_AbortTrans(ctx.trans);
 	if (vldbentries->nbulkentries_val)
-	    free((char *)vldbentries->nbulkentries_val);
+	    free(vldbentries->nbulkentries_val);
 	vldbentries->nbulkentries_val = 0;
 	vldbentries->nbulkentries_len = 0;
 	*nextstartindex = -1;
diff --git a/src/vol/listinodes.c b/src/vol/listinodes.c
index da1d2dfb8f..5be20ca348 100644
--- a/src/vol/listinodes.c
+++ b/src/vol/listinodes.c
@@ -757,7 +757,7 @@ xfs_ListViceInodes(char *devname, char *mountedOn, FD_t inodeFile,
 
     closedir(top_dirp);
     if (renames)
-	free((char *)renames);
+	free(renames);
     if (inodeFile != INVALID_FD) {
 	if (OS_SYNC(inodeFile) == -1) {
 	    Log("Unable to successfully fsync inode file for %s\n", mountedOn);
@@ -787,7 +787,7 @@ xfs_ListViceInodes(char *devname, char *mountedOn, FD_t inodeFile,
     if (top_dirp)
 	closedir(top_dirp);
     if (renames)
-	free((char *)renames);
+	free(renames);
     return -1;
 }
 
diff --git a/src/vol/volume.c b/src/vol/volume.c
index dc8a4b3dc7..a293c58b05 100644
--- a/src/vol/volume.c
+++ b/src/vol/volume.c
@@ -6489,7 +6489,7 @@ VGetBitmap_r(Error * ec, Volume * vp, VnodeClass class)
 	vip->bitmap = BitMap;
 	vip->bitmapOffset = 0;
     } else
-	free((byte *) BitMap);
+	free(BitMap);
 #endif /* BITMAP_LATER */
 #ifdef AFS_DEMAND_ATTACH_FS
     VChangeState_r(vp, state_save);
diff --git a/src/volser/dumpstuff.c b/src/volser/dumpstuff.c
index 91f725c8fd..be52de22cc 100644
--- a/src/volser/dumpstuff.c
+++ b/src/volser/dumpstuff.c
@@ -1295,9 +1295,9 @@ RestoreVolume(struct rx_call *call, Volume * avp, int incremental,
   out:
     /* Free the malloced space above */
     if (b1)
-	free((char *)b1);
+	free(b1);
     if (b2)
-	free((char *)b2);
+	free(b2);
     return error;
 }