diff --git a/SDWebImage/SDWebImageCompat.h b/SDWebImage/SDWebImageCompat.h
index 673af06..934a643 100644
--- a/SDWebImage/SDWebImageCompat.h
+++ b/SDWebImage/SDWebImageCompat.h
@@ -41,7 +41,7 @@
     #define SDDispatchQueueSetterSementics assign
 #endif
 
-extern inline UIImage *SDScaledImageForKey(NSString *key, UIImage *image);
+extern UIImage *SDScaledImageForKey(NSString *key, UIImage *image);
 
 #define dispatch_main_sync_safe(block)\
     if ([NSThread isMainThread])\