diff --git a/SDWebImage/SDWebImageManager.m b/SDWebImage/SDWebImageManager.m
index fe63cc43..e4422d5d 100644
--- a/SDWebImage/SDWebImageManager.m
+++ b/SDWebImage/SDWebImageManager.m
@@ -125,9 +125,8 @@
         url = nil;
     }
 
-    __block SDWebImageCombinedOperation *operation = [SDWebImageCombinedOperation new];
+    SDWebImageCombinedOperation *operation = [SDWebImageCombinedOperation new];
     operation.manager = self;
-    __weak SDWebImageCombinedOperation *weakOperation = operation;
 
     BOOL isFailedUrl = NO;
     if (url) {
@@ -150,7 +149,8 @@
     if (options & SDWebImageCacheMemoryOnly) cacheOptions |= SDImageCacheQueryMemoryOnly;
     if (options & SDWebImageQueryDataWhenInMemory) cacheOptions |= SDImageCacheQueryDataWhenInMemory;
     if (options & SDWebImageQueryDiskSync) cacheOptions |= SDImageCacheQueryDiskSync;
-
+    
+    __weak SDWebImageCombinedOperation *weakOperation = operation;
     operation.cacheOperation = [self.imageCache queryCacheOperationForKey:key options:cacheOptions done:^(UIImage *cachedImage, NSData *cachedData, SDImageCacheType cacheType) {
         __strong __typeof(weakOperation) strongOperation = weakOperation;
         if (!strongOperation || strongOperation.isCancelled) {