diff --git a/SDWebImage.xcodeproj/project.pbxproj b/SDWebImage.xcodeproj/project.pbxproj
index e37a5852..953f8524 100644
--- a/SDWebImage.xcodeproj/project.pbxproj
+++ b/SDWebImage.xcodeproj/project.pbxproj
@@ -303,7 +303,7 @@
 		53922D66148C55810056699D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0430;
+				LastUpgradeCheck = 0460;
 				ORGANIZATIONNAME = Dailymotion;
 			};
 			buildConfigurationList = 53922D69148C55810056699D /* Build configuration list for PBXProject "SDWebImage" */;
@@ -404,7 +404,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = NO;
 				DSTROOT = /tmp/SDWebImage.dst;
@@ -423,7 +422,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = NO;
 				DSTROOT = /tmp/SDWebImage.dst;
@@ -442,7 +440,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = NO;
 				DSTROOT = /tmp/SDWebImage.dst;
@@ -461,7 +458,6 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_OBJC_ARC = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = NO;
 				DSTROOT = /tmp/SDWebImage.dst;
diff --git a/SDWebImage/SDWebImageDownloader.m b/SDWebImage/SDWebImageDownloader.m
index 7765c647..deca6ff0 100644
--- a/SDWebImage/SDWebImageDownloader.m
+++ b/SDWebImage/SDWebImageDownloader.m
@@ -136,7 +136,7 @@ static NSString *const kCompletedCallbackKey = @"completed";
             [sself callbacksForURL:url];
             [sself removeCallbacksForURL:url];
         }];
-        [self.downloadQueue addOperation:operation];
+        [wself.downloadQueue addOperation:operation];
     }];
 
     return operation;