diff --git a/CompressImagesFunction/CompressImages.cs b/CompressImagesFunction/CompressImages.cs
index 550526b7c..5e28459ac 100644
--- a/CompressImagesFunction/CompressImages.cs
+++ b/CompressImagesFunction/CompressImages.cs
@@ -186,7 +186,7 @@ private static CompressionResult[] OptimizeImages(Repository repo, string localP
                             }
 
                             FileInfo fileAfter = new FileInfo(image);
-                            if (fileAfter.Length < before)
+                            if (fileAfter.Length < before && fileAfter.Length > 0)
                             {
                                 optimizedImages.Add(new CompressionResult
                                 {