diff --git a/tpws/params.h b/tpws/params.h
index 87935e3..81639a0 100644
--- a/tpws/params.h
+++ b/tpws/params.h
@@ -24,7 +24,11 @@
 
 #define IPCACHE_LIFETIME 7200
 
-#define MAX_GIDS 64
+#if defined(__APPLE__)
+# define	MAX_GIDS 16
+#else 
+# define	MAX_GIDS 64
+#endif
 
 enum bindll { unwanted=0, no, prefer, force };
 
diff --git a/tpws/tpws.c b/tpws/tpws.c
index 92dd21a..8ce1d7c 100644
--- a/tpws/tpws.c
+++ b/tpws/tpws.c
@@ -997,8 +997,7 @@ void parse_params(int argc, char *argv[])
 			if (getgrouplist(optarg,pwd->pw_gid,params.gid,&params.gid_count)<0)
 #endif
 			{
-				DLOG_ERR("getgrouplist failed. too much groups ?\n");
-				exit_clean(1);
+				DLOG_CONDUP("WARNING ! May shrink needed groups.\n");
 			}
 			if (!params.gid_count)
 			{