diff --git a/SOCKit.m b/SOCKit.m
index 30f8eb8..ae73363 100644
--- a/SOCKit.m
+++ b/SOCKit.m
@@ -394,6 +394,9 @@ - (id)performSelector:(SEL)selector onObject:(id)object sourceString:(NSString *
   if (isInitializer) {
     object = [[object alloc] autorelease];
   }
+  
+  if (!object)
+    return nil;
 
   NSArray* values = nil;
   BOOL succeeded = [self gatherParameterValues:&values fromString:sourceString];