diff --git a/StatGroups/scripting/StatGroups.sp b/StatGroups/scripting/StatGroups.sp
index da419e8..888bbc3 100644
--- a/StatGroups/scripting/StatGroups.sp
+++ b/StatGroups/scripting/StatGroups.sp
@@ -31,8 +31,10 @@ public void OnAllPluginsLoaded()
 //----------------------------------------------------------------------------------------------------
 public void OnClientAuthorized(int client, const char[] sAuthID)
 {
-	int rank = RetrieveStatRank(client);
-	
+	int rank;
+	if ((rank = RetrieveStatRank(client)) == -1)
+		return;
+
 	if (rank <= 10) AdminGroups_GrantAdminGroup(client, "Ranking-Top10");
 	if (rank <= 20) AdminGroups_GrantAdminGroup(client, "Ranking-Top20");
 	if (rank <= 40) AdminGroups_GrantAdminGroup(client, "Ranking-Top40");