diff --git a/AFNetworking/AFURLConnectionOperation.m b/AFNetworking/AFURLConnectionOperation.m
index ed0d42d..34f5fc6 100644
--- a/AFNetworking/AFURLConnectionOperation.m
+++ b/AFNetworking/AFURLConnectionOperation.m
@@ -21,6 +21,9 @@
 // THE SOFTWARE.
 
 #import "AFURLConnectionOperation.h"
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
+#import <UIKit/UIKit.h>
+#endif
 
 typedef enum {
     AFHTTPOperationPausedState      = -1,