diff --git a/src/afs/LINUX/osi_groups.c b/src/afs/LINUX/osi_groups.c
index ed6ab5ad80..de3671c3ac 100644
--- a/src/afs/LINUX/osi_groups.c
+++ b/src/afs/LINUX/osi_groups.c
@@ -26,7 +26,7 @@
 #include "afs/nfsclient.h"
 #include "osi_compat.h"
 
-#ifdef AFS_LINUX26_ONEGROUP_ENV
+#ifdef AFS_PAG_ONEGROUP_ENV
 
 static afs_uint32
 afs_linux_pag_from_groups(struct group_info *group_info) {
diff --git a/src/afs/LINUX/osi_machdep.h b/src/afs/LINUX/osi_machdep.h
index 4448fdcfdb..7b457ca603 100644
--- a/src/afs/LINUX/osi_machdep.h
+++ b/src/afs/LINUX/osi_machdep.h
@@ -15,11 +15,6 @@
 #ifndef OSI_MACHDEP_H_
 #define OSI_MACHDEP_H_
 
-#include <linux/version.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
-# define AFS_LINUX26_ONEGROUP_ENV 1
-#endif
-
 /* Only needed for xdr.h in glibc 2.1.x */
 #ifndef quad_t
 # define quad_t __quad_t
diff --git a/src/afs/afs_osi.h b/src/afs/afs_osi.h
index d31f2ac6fe..a96f3ce15a 100644
--- a/src/afs/afs_osi.h
+++ b/src/afs/afs_osi.h
@@ -448,7 +448,7 @@ extern afs_ucred_t afs_osi_cred, *afs_osi_credp;
 #define osi_curcred() (u.u_cred)
 #endif
 
-#ifdef AFS_LINUX26_ONEGROUP_ENV
+#ifdef AFS_PAG_ONEGROUP_ENV
 #define AFS_NUMPAGGROUPS 1
 #else
 #define AFS_NUMPAGGROUPS 2
diff --git a/src/afs/afs_osi_pag.c b/src/afs/afs_osi_pag.c
index 9b8c5b52f3..f722e62277 100644
--- a/src/afs/afs_osi_pag.c
+++ b/src/afs/afs_osi_pag.c
@@ -382,7 +382,7 @@ afs_setpag_val(int pagval)
     return (code);
 }
 
-#ifndef AFS_LINUX26_ONEGROUP_ENV
+#ifndef AFS_PAG_ONEGROUP_ENV
 int
 afs_getpag_val(void)
 {
@@ -535,7 +535,7 @@ afs_DestroyReq(struct vrequest *av)
     }
 }
 
-#ifndef AFS_LINUX26_ONEGROUP_ENV
+#ifndef AFS_PAG_ONEGROUP_ENV
 afs_uint32
 afs_get_pag_from_groups(gid_t g0a, gid_t g1a)
 {
@@ -582,7 +582,8 @@ afs_get_groups_from_pag(afs_uint32 pag, gid_t * g0p, gid_t * g1p)
     *g1p = g1 + 0x3f00;
 }
 #else
-void afs_get_groups_from_pag(afs_uint32 pag, gid_t *g0p, gid_t *g1p)
+void
+afs_get_groups_from_pag(afs_uint32 pag, gid_t *g0p, gid_t *g1p)
 {
     AFS_STATCNT(afs_get_groups_from_pag);
     *g0p = pag;
diff --git a/src/afs/afs_pioctl.c b/src/afs/afs_pioctl.c
index 19a48650e0..071f7af5cf 100644
--- a/src/afs/afs_pioctl.c
+++ b/src/afs/afs_pioctl.c
@@ -4561,7 +4561,7 @@ HandleClientContext(struct afs_ioctl *ablob, int *com,
     newcred->cr_groupset.gs_union.un_groups[0] = g0;
     newcred->cr_groupset.gs_union.un_groups[1] = g1;
 #elif defined(AFS_LINUX26_ENV)
-# ifdef AFS_LINUX26_ONEGROUP_ENV
+# ifdef AFS_PAG_ONEGROUP_ENV
     afs_set_cr_group_info(newcred, groups_alloc(1)); /* nothing sets this */
     l = (((g0-0x3f00) & 0x3fff) << 14) | ((g1-0x3f00) & 0x3fff);
     h = ((g0-0x3f00) >> 14);
diff --git a/src/auth/ktc.c b/src/auth/ktc.c
index 4630410f9c..d0decba279 100644
--- a/src/auth/ktc.c
+++ b/src/auth/ktc.c
@@ -817,14 +817,14 @@ ktc_curpag(void)
 	afs_uint32 g0, g1;
 	afs_uint32 h, l, ret;
 	int ngroups;
-#ifdef AFS_LINUX26_ENV
+#ifdef AFS_PAG_ONEGROUP_ENV
 	int i;
 #endif
 
 	ngroups = getgroups(sizeof groups / sizeof groups[0], groups);
 
-#ifdef AFS_LINUX26_ENV
-	/* check for AFS_LINUX26_ONEGROUP_ENV PAGs */
+#ifdef AFS_PAG_ONEGROUP_ENV
+	/* Check for one-group PAGs. */
 	for (i = 0; i < ngroups; i++) {
 	    if (((groups[i] >> 24) & 0xff) == 'A') {
 		return groups[i];
diff --git a/src/config/param.linux26.h b/src/config/param.linux26.h
index 3e69ee3159..78fa75a38b 100644
--- a/src/config/param.linux26.h
+++ b/src/config/param.linux26.h
@@ -13,6 +13,8 @@
 #ifndef UKERNEL
 
 /* This section for kernel libafs compiles only */
+#include <linux/version.h>
+
 #define AFS_LINUX20_ENV		1
 #define AFS_LINUX22_ENV		1
 #define AFS_LINUX24_ENV		1
@@ -28,6 +30,9 @@
 #define AFS_USERSPACE_IP_ADDR	1
 #define RXK_LISTENER_ENV	1
 #define AFS_GCPAGS		1	/* Set to Userdisabled, allow sysctl to override */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
+# define AFS_PAG_ONEGROUP_ENV	1
+#endif
 #define AFS_HAVE_FFS		1	/* Use system's ffs */
 #define AFS_HAVE_STATVFS	0	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV		1	/* read/write implemented via VM */
diff --git a/src/kopenafs/kopenafs.c b/src/kopenafs/kopenafs.c
index dde7b6bca5..02b3f94731 100644
--- a/src/kopenafs/kopenafs.c
+++ b/src/kopenafs/kopenafs.c
@@ -133,7 +133,7 @@ os_haspag(void)
     gid_t *groups;
     afs_uint32 g0, g1;
     afs_uint32 h, l, pag;
-# ifdef AFS_LINUX26_ENV
+# ifdef AFS_PAG_ONEGROUP_ENV
     int i;
 # endif
 
@@ -143,8 +143,8 @@ os_haspag(void)
         return 0;
     ngroups = getgroups(ngroups, groups);
 
-    /* Check for AFS_LINUX26_ONEGROUP_ENV PAGs. */
-# ifdef AFS_LINUX26_ENV
+    /* Check for one-group PAGs. */
+# ifdef AFS_PAG_ONEGROUP_ENV
     for (i = 0; i < ngroups; i++)
         if (((groups[i] >> 24) & 0xff) == 'A') {
             free(groups);