diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
index 3466b169..ec1373dc 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -56,16 +56,15 @@
 
     dispatch_async(dispatch_get_main_queue(), ^
     {
-        self.connection = [NSURLConnection.alloc initWithRequest:self.request delegate:self startImmediately:NO];
-        [self.connection scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
-        [self.connection start];
         self.executing = YES;
+        self.connection = [NSURLConnection.alloc initWithRequest:self.request delegate:self startImmediately:NO];
 
         // If not in low priority mode, ensure we aren't blocked by UI manipulations (default runloop mode for NSURLConnection is NSEventTrackingRunLoopMode)
-        if (self.options & SDWebImageDownloaderLowPriority)
+        if (!(self.options & SDWebImageDownloaderLowPriority))
         {
             [self.connection scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
         }
+
         [self.connection start];
 
         if (self.connection)