diff --git a/SDWebImage/SDImageCacheDefine.m b/SDWebImage/SDImageCacheDefine.m
index 61e00183..255b860e 100644
--- a/SDWebImage/SDImageCacheDefine.m
+++ b/SDWebImage/SDImageCacheDefine.m
@@ -17,7 +17,7 @@ UIImage * _Nullable SDImageCacheDecodeImageData(NSData * _Nonnull imageData, NSS
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(MAX(scale, 1))};
+    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
         [mutableCoderOptions setValue:context forKey:SDImageCoderWebImageContext];
diff --git a/SDWebImage/SDImageLoader.m b/SDWebImage/SDImageLoader.m
index d8343b50..cb1d8609 100644
--- a/SDWebImage/SDImageLoader.m
+++ b/SDWebImage/SDImageLoader.m
@@ -31,7 +31,7 @@ UIImage * _Nullable SDImageLoaderDecodeImageData(NSData * _Nonnull imageData, NS
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(MAX(scale, 1))};
+    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
         [mutableCoderOptions setValue:context forKey:SDImageCoderWebImageContext];
@@ -90,7 +90,7 @@ UIImage * _Nullable SDImageLoaderDecodeProgressiveImageData(NSData * _Nonnull im
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(MAX(scale, 1))};
+    SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
         [mutableCoderOptions setValue:context forKey:SDImageCoderWebImageContext];
diff --git a/SDWebImage/SDWebImageDefine.m b/SDWebImage/SDWebImageDefine.m
index d339020a..c2175264 100644
--- a/SDWebImage/SDWebImageDefine.m
+++ b/SDWebImage/SDWebImageDefine.m
@@ -39,14 +39,14 @@ inline CGFloat SDImageScaleFactorForKey(NSString * _Nullable key) {
                 NSString *fileScale = [NSString stringWithFormat:@"@%@x.", scaleFactor];
                 if ([key containsString:fileScale]) {
                     scale = scaleFactor.doubleValue;
-                    return scale;
+                    return MAX(scale, 1);
                 }
                 if (isURL) {
                     // %402x. for url encode
                     NSString *urlScale = [NSString stringWithFormat:@"%%40%@x.", scaleFactor];
                     if ([key containsString:urlScale]) {
                         scale = scaleFactor.doubleValue;
-                        return scale;
+                        return MAX(scale, 1);
                     }
                 }
             }