diff --git a/YYImage/YYImageCoder.m b/YYImage/YYImageCoder.m
index dbb8a2f..973a2b8 100644
--- a/YYImage/YYImageCoder.m
+++ b/YYImage/YYImageCoder.m
@@ -2457,13 +2457,13 @@ - (void)_encodeImageWithDestination:(CGImageDestinationRef)destination imageCoun
             } else if ([imageSrc isKindOfClass:[NSURL class]]) {
                 CGImageSourceRef source = CGImageSourceCreateWithURL((CFURLRef)imageSrc, NULL);
                 if (source) {
-                    CGImageDestinationAddImageFromSource(destination, source, i, (CFDictionaryRef)frameProperty);
+                    CGImageDestinationAddImageFromSource(destination, source, 0, (CFDictionaryRef)frameProperty);
                     CFRelease(source);
                 }
             } else if ([imageSrc isKindOfClass:[NSData class]]) {
                 CGImageSourceRef source = CGImageSourceCreateWithData((CFDataRef)imageSrc, NULL);
                 if (source) {
-                    CGImageDestinationAddImageFromSource(destination, source, i, (CFDictionaryRef)frameProperty);
+                    CGImageDestinationAddImageFromSource(destination, source, 0, (CFDictionaryRef)frameProperty);
                     CFRelease(source);
                 }
             }