diff --git a/SDWebImage.xcodeproj/project.pbxproj b/SDWebImage.xcodeproj/project.pbxproj
index acb9a3a4..e37a5852 100644
--- a/SDWebImage.xcodeproj/project.pbxproj
+++ b/SDWebImage.xcodeproj/project.pbxproj
@@ -140,6 +140,7 @@
 				53922D70148C55820056699D /* Products */,
 			);
 			sourceTree = "<group>";
+			usesTabs = 0;
 		};
 		53922D70148C55820056699D /* Products */ = {
 			isa = PBXGroup;
diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
index 52f7af9c..df8db73c 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -71,10 +71,10 @@
 
         if (self.connection)
         {
-			if (self.progressBlock)
-			{
-				self.progressBlock(0, -1);
-			}
+            if (self.progressBlock)
+            {
+                self.progressBlock(0, -1);
+            }
             [[NSNotificationCenter defaultCenter] postNotificationName:SDWebImageDownloadStartNotification object:self];
         }
         else