diff --git a/src/vfsck/setup.c b/src/vfsck/setup.c
index 9930b359d9..1c34297de7 100644
--- a/src/vfsck/setup.c
+++ b/src/vfsck/setup.c
@@ -380,7 +380,7 @@ setup(dev)
 	return (-1);
 #endif
 #ifdef AFS_NEWCG_ENV
-# ifndef AFS_SUN510_ENV
+# ifndef AFS_SUN59_ENV
     if (sblock.fs_interleave < 1) {
 	pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK", sblock.fs_interleave);
 	sblock.fs_interleave = 1;
@@ -391,7 +391,7 @@ setup(dev)
 	    dirty(&asblk);
 	}
     }
-# endif /* AFS_SUN510_ENV */
+# endif /* AFS_SUN59_ENV */
 #endif /* AFS_NEWCG_ENV */
 #ifdef AFS_NEWCG_ENV
     if (sblock.fs_npsect < sblock.fs_nsect) {
@@ -473,7 +473,7 @@ setup(dev)
 #if	defined(AFS_SUN_ENV) && !defined(AFS_SUN3_ENV)
 #ifdef	AFS_SUN5_ENV
 	    sblock.fs_npsect = 0;
-# ifndef AFS_SUN510_ENV
+# ifndef AFS_SUN59_ENV
 	    sblock.fs_interleave = 0;
 # endif
 	    sblock.fs_state = FSOKAY - sblock.fs_time;	/* make mountable */
@@ -743,7 +743,7 @@ readsb(listerr)
      */
     altsblock.fs_fsbtodb = sblock.fs_fsbtodb;
 #ifdef AFS_NEWCG_ENV
-# ifndef AFS_SUN510_ENV
+# ifndef AFS_SUN59_ENV
     altsblock.fs_interleave = sblock.fs_interleave;
 # endif
     altsblock.fs_npsect = sblock.fs_npsect;