diff --git a/SDWebImage/SDWebImageManager.m b/SDWebImage/SDWebImageManager.m
index ec82ae19..4637105f 100644
--- a/SDWebImage/SDWebImageManager.m
+++ b/SDWebImage/SDWebImageManager.m
@@ -271,7 +271,7 @@ static SDWebImageManager *instance;
     }
     if ([delegate respondsToSelector:@selector(webImageManager:didFinishWithImage:forURL:)])
     {
-        objc_msgSend(delegate, @selector(webImageManager:didFinishWithImage:forURL:), self, image, url);
+        ((void ( *)(id, SEL, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFinishWithImage:forURL:), self, image, url);
     }
     if ([delegate respondsToSelector:@selector(webImageManager:didFinishWithImage:forURL:userInfo:)])
     {
@@ -280,7 +280,7 @@ static SDWebImageManager *instance;
         {
             userInfo = nil;
         }
-        objc_msgSend(delegate, @selector(webImageManager:didFinishWithImage:forURL:userInfo:), self, image, url, userInfo);
+        ((void ( *)(id, SEL, id, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFinishWithImage:forURL:userInfo:), self, image, url, userInfo);
     }
 #if NS_BLOCKS_AVAILABLE
     if ([info objectForKey:@"success"])
@@ -379,7 +379,7 @@ static SDWebImageManager *instance;
             
             if ([delegate respondsToSelector:@selector(webImageManager:didProgressWithPartialImage:forURL:)])
             {
-                objc_msgSend(delegate, @selector(webImageManager:didProgressWithPartialImage:forURL:), self, image, downloader.url);
+                ((void ( *)(id, SEL, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didProgressWithPartialImage:forURL:), self, image, downloader.url);
             }
             if ([delegate respondsToSelector:@selector(webImageManager:didProgressWithPartialImage:forURL:userInfo:)])
             {
@@ -388,7 +388,7 @@ static SDWebImageManager *instance;
                 {
                     userInfo = nil;
                 }
-                objc_msgSend(delegate, @selector(webImageManager:didProgressWithPartialImage:forURL:userInfo:), self, image, downloader.url, userInfo);
+                ((void ( *)(id, SEL, id, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didProgressWithPartialImage:forURL:userInfo:), self, image, downloader.url, userInfo);
             }
             // Delegate notified. Break out and restart loop
             found = YES;
@@ -430,7 +430,7 @@ static SDWebImageManager *instance;
                 }
                 if ([delegate respondsToSelector:@selector(webImageManager:didFinishWithImage:forURL:)])
                 {
-                    objc_msgSend(delegate, @selector(webImageManager:didFinishWithImage:forURL:), self, image, downloader.url);
+                    ((void ( *)(id, SEL, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFinishWithImage:forURL:), self, image, downloader.url);
                 }
                 if ([delegate respondsToSelector:@selector(webImageManager:didFinishWithImage:forURL:userInfo:)])
                 {
@@ -439,7 +439,7 @@ static SDWebImageManager *instance;
                     {
                         userInfo = nil;
                     }
-                    objc_msgSend(delegate, @selector(webImageManager:didFinishWithImage:forURL:userInfo:), self, image, downloader.url, userInfo);
+                    ((void ( *)(id, SEL, id, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFinishWithImage:forURL:userInfo:), self, image, downloader.url, userInfo);
                 }
 #if NS_BLOCKS_AVAILABLE
                 if ([info objectForKey:@"success"])
@@ -457,7 +457,7 @@ static SDWebImageManager *instance;
                 }
                 if ([delegate respondsToSelector:@selector(webImageManager:didFailWithError:forURL:)])
                 {
-                    objc_msgSend(delegate, @selector(webImageManager:didFailWithError:forURL:), self, nil, downloader.url);
+                    ((void ( *)(id, SEL, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFailWithError:forURL:), self, nil, downloader.url);
                 }
                 if ([delegate respondsToSelector:@selector(webImageManager:didFailWithError:forURL:userInfo:)])
                 {
@@ -466,7 +466,7 @@ static SDWebImageManager *instance;
                     {
                         userInfo = nil;
                     }
-                    objc_msgSend(delegate, @selector(webImageManager:didFailWithError:forURL:userInfo:), self, nil, downloader.url, userInfo);
+                    ((void ( *)(id, SEL, id, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFailWithError:forURL:userInfo:), self, nil, downloader.url, userInfo);
                 }
 #if NS_BLOCKS_AVAILABLE
                 if ([info objectForKey:@"failure"])
@@ -536,7 +536,7 @@ static SDWebImageManager *instance;
             }
             if ([delegate respondsToSelector:@selector(webImageManager:didFailWithError:forURL:)])
             {
-                objc_msgSend(delegate, @selector(webImageManager:didFailWithError:forURL:), self, error, downloader.url);
+                ((void ( *)(id, SEL, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFailWithError:forURL:), self, error, downloader.url);
             }
             if ([delegate respondsToSelector:@selector(webImageManager:didFailWithError:forURL:userInfo:)])
             {
@@ -545,7 +545,7 @@ static SDWebImageManager *instance;
                 {
                     userInfo = nil;
                 }
-                objc_msgSend(delegate, @selector(webImageManager:didFailWithError:forURL:userInfo:), self, error, downloader.url, userInfo);
+                ((void ( *)(id, SEL, id, id, id, id))objc_msgSend)(delegate, @selector(webImageManager:didFailWithError:forURL:userInfo:), self, error, downloader.url, userInfo);
             }
 #if NS_BLOCKS_AVAILABLE
             if ([info objectForKey:@"failure"])