diff --git a/SDWebImage/Core/SDWebImageDownloaderOperation.m b/SDWebImage/Core/SDWebImageDownloaderOperation.m
index 9f51dfb2..8d25f3b8 100644
--- a/SDWebImage/Core/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/Core/SDWebImageDownloaderOperation.m
@@ -390,7 +390,7 @@ didReceiveResponse:(NSURLResponse *)response
         // Get the image data
         NSData *imageData = [self.imageData copy];
         
-        // keep maxmium one progressive decode process during download
+        // keep maximum one progressive decode process during download
         if (self.coderQueue.operationCount == 0) {
             // NSOperation have autoreleasepool, don't need to create extra one
             [self.coderQueue addOperationWithBlock:^{