diff --git a/packages/netlify-cms-widget-file/src/withFileControl.js b/packages/netlify-cms-widget-file/src/withFileControl.js
index 2a876a18..3d7df56a 100644
--- a/packages/netlify-cms-widget-file/src/withFileControl.js
+++ b/packages/netlify-cms-widget-file/src/withFileControl.js
@@ -26,6 +26,7 @@ const ImageWrapper = styled.div`
   margin-bottom: 20px;
   border: ${borders.textField};
   border-radius: ${lengths.borderRadius};
+  overflow: hidden;
   ${effects.checkerboard};
   ${shadows.inset};
 `;