diff --git a/SDWebImage/UIImage+MultiFormat.m b/SDWebImage/UIImage+MultiFormat.m
index 5395280..a830754 100644
--- a/SDWebImage/UIImage+MultiFormat.m
+++ b/SDWebImage/UIImage+MultiFormat.m
@@ -18,6 +18,10 @@
 @implementation UIImage (MultiFormat)
 
 + (UIImage *)sd_imageWithData:(NSData *)data {
+    if (!data) {
+        return nil;
+    }
+    
     UIImage *image;
     NSString *imageContentType = [NSData sd_contentTypeForImageData:data];
     if ([imageContentType isEqualToString:@"image/gif"]) {