diff --git a/AFNetworking/AFNetworkActivityIndicatorManager.m b/AFNetworking/AFNetworkActivityIndicatorManager.m
index efd8d34..eb0c8e8 100644
--- a/AFNetworking/AFNetworkActivityIndicatorManager.m
+++ b/AFNetworking/AFNetworkActivityIndicatorManager.m
@@ -24,6 +24,7 @@
 
 #import "AFHTTPRequestOperation.h"
 
+#if __IPHONE_OS_VERSION_MIN_REQUIRED
 @interface AFNetworkActivityIndicatorManager ()
 @property (readwrite, nonatomic, assign) NSInteger activityCount;
 @end
@@ -83,3 +84,4 @@
 }
 
 @end
+#endif
\ No newline at end of file