diff --git a/Source/NSMapTable.m b/Source/NSMapTable.m
index 6435308e7..f64541f73 100644
--- a/Source/NSMapTable.m
+++ b/Source/NSMapTable.m
@@ -345,11 +345,6 @@ NSMapGet(NSMapTable *table, const void *key)
       NSWarnLog(@"Nul table argument supplied");
       return 0;
     }
-  if (key == 0)
-    {
-      NSWarnLog(@"Nul key argument supplied");
-      return 0;
-    }
   n = GSIMapNodeForKey((GSIMapTable)table, (GSIMapKey)key);
   if (n == 0)
     {