1 files changed, 1 insertions, 1 deletions
diff --git a/posix.c b/posix.c
index e6dab25..06e6b5f 100644
--- a/posix.c
+++ b/posix.c
@@ -154,7 +154,7 @@ SCM scm_getgroups()
      The length needs not be exactly right */
   grps = must_malloc_cell((0L + ngroups) * sizeof(gid_t),
 			  MAKE_LENGTH(((0L + ngroups) * sizeof(gid_t))/sizeof(long),
-				      tc7_uvect),
+				      tc7_VfixN32),
 			  scm_s_getgroups);
   ALLOW_INTS;
   {