diff --git a/imagekit/files.py b/imagekit/files.py
index c7af4bb..81db579 100644
--- a/imagekit/files.py
+++ b/imagekit/files.py
@@ -111,7 +111,7 @@ class ImageSpecCacheFile(BaseIKFile, ImageFile):
         if self.source_file:  # TODO: Should we error here or something if the source_file doesn't exist?
             # Process the original image file.
             content = self.spec.apply(self.source_file)
-            return self.storage.save(self.name, content)
+            self.storage.save(self.name, content)
 
 
 class IKContentFile(ContentFile):