diff --git a/AFNetworking/AFHTTPRequestOperation.m b/AFNetworking/AFHTTPRequestOperation.m
index 26b0eb0..31efc4d 100644
--- a/AFNetworking/AFHTTPRequestOperation.m
+++ b/AFNetworking/AFHTTPRequestOperation.m
@@ -173,7 +173,7 @@ static NSString * AFStringFromIndexSet(NSIndexSet *indexSet) {
 }
 
 - (BOOL)hasAcceptableStatusCode {
-    NSUInteger statusCode = ([self.response isKindOfClass:[NSHTTPURLResponse class]]) ? (NSUInteger)[self.response statusCode] : 200;
+    NSUInteger statusCode = ([self.response isKindOfClass:[NSHTTPURLResponse class]]) ? (NSUInteger)[self.response statusCode] : 0;
     return ![[self class] acceptableStatusCodes] || [[[self class] acceptableStatusCodes] containsIndex:statusCode];
 }