diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index fd2312b..9cf237b 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -722,7 +722,7 @@ static inline NSString * AFMultipartFormFinalBoundary() {
     self.request = request;
     self.stringEncoding = encoding;
     
-    self.temporaryFilePath = [AFMultipartTemporaryFileDirectoryPath() stringByAppendingPathComponent:[NSString stringWithFormat:@"%lu", [[self.request URL] hash]]];
+    self.temporaryFilePath = [AFMultipartTemporaryFileDirectoryPath() stringByAppendingPathComponent:[NSString stringWithFormat:@"%lu", (long)[[self.request URL] hash]]];
     self.outputStream = [NSOutputStream outputStreamToFileAtPath:self.temporaryFilePath append:NO];
     
     NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
diff --git a/AFNetworking/AFHTTPRequestOperation.m b/AFNetworking/AFHTTPRequestOperation.m
index a510960..d6ba4a3 100644
--- a/AFNetworking/AFHTTPRequestOperation.m
+++ b/AFNetworking/AFHTTPRequestOperation.m
@@ -77,11 +77,11 @@ static NSString * AFStringFromIndexSet(NSIndexSet *indexSet) {
         }
 
         if (range.length == 1) {
-            [string appendFormat:@"%lu", range.location];
+            [string appendFormat:@"%lu", (long)range.location];
         } else {
             NSUInteger firstIndex = range.location;
             NSUInteger lastIndex = firstIndex + range.length - 1;
-            [string appendFormat:@"%lu-%lu", firstIndex, lastIndex];
+            [string appendFormat:@"%lu-%lu", (long)firstIndex, (long)lastIndex];
         }
 
         range.location = nextIndex;
diff --git a/Example/Classes/Models/Tweet.m b/Example/Classes/Models/Tweet.m
index 14fe2d0..f9e42f8 100644
--- a/Example/Classes/Models/Tweet.m
+++ b/Example/Classes/Models/Tweet.m
@@ -67,7 +67,7 @@
 #if __IPHONE_OS_VERSION_MIN_REQUIRED
         [[[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Error", nil) message:[error localizedDescription] delegate:nil cancelButtonTitle:nil otherButtonTitles:NSLocalizedString(@"OK", nil), nil] show];
 #else
-        [[NSAlert alertWithMessageText:NSLocalizedString(@"Error", nil) defaultButton:NSLocalizedString(@"OK", nil) alternateButton:nil otherButton:nil informativeTextWithFormat:[error localizedDescription]] runModal];  
+        [[NSAlert alertWithMessageText:NSLocalizedString(@"Error", nil) defaultButton:NSLocalizedString(@"OK", nil) alternateButton:nil otherButton:nil informativeTextWithFormat:@"%@",[error localizedDescription]] runModal];
 #endif
         if (block) {
             block(nil);