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-rw-r--r--grp/initgroups.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/grp/initgroups.c b/grp/initgroups.c
index 7b0fe8b131..fd30ebf7e0 100644
--- a/grp/initgroups.c
+++ b/grp/initgroups.c
@@ -52,7 +52,7 @@ compat_call (service_user *nip, const char *user, gid_t group, long int *start,
 	     long int *size, gid_t *groups, long int limit, int *errnop)
 {
   struct group grpbuf;
-  size_t buflen = __sysconf (_SC_GETPW_R_SIZE_MAX);
+  size_t buflen = __sysconf (_SC_GETGR_R_SIZE_MAX);
   char *tmpbuf;
   enum nss_status status;
   set_function setgrent_fct;