diff --git a/SDWebImage/Core/NSButton+WebCache.m b/SDWebImage/Core/NSButton+WebCache.m
index 300e5a36..0c083e56 100644
--- a/SDWebImage/Core/NSButton+WebCache.m
+++ b/SDWebImage/Core/NSButton+WebCache.m
@@ -149,7 +149,7 @@ static NSString * const SDAlternateImageOperationKey = @"NSButtonAlternateImageO
     [self sd_cancelImageLoadOperationWithKey:SDAlternateImageOperationKey];
 }
 
-#pragma mar - Private
+#pragma mark - Private
 
 - (NSURL *)sd_currentImageURL {
     return objc_getAssociatedObject(self, @selector(sd_currentImageURL));