diff --git a/.eslintrc b/.eslintrc
index 64096dbf0..bd662355a 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -28,6 +28,7 @@ rules:
   no-multiple-empty-lines: 2
   no-nested-ternary: 2
   no-spaced-func: 2
+  no-trailing-spaces: 2
   operator-linebreak: 2
   quotes: [2, single]
   semi-spacing: 2
diff --git a/client/components/cards/attachments.js b/client/components/cards/attachments.js
index 1e5aa03be..4e3e0b19a 100644
--- a/client/components/cards/attachments.js
+++ b/client/components/cards/attachments.js
@@ -22,7 +22,7 @@ Template.attachmentsGalery.events({
   },
   'click .js-preview-image'(evt) {
     Popup.open('previewAttachedImage').call(this, evt);
-    // when multiple thumbnails, if click one then another very fast, 
+    // when multiple thumbnails, if click one then another very fast,
     // we might get a wrong width from previous img.
     // when popup reused, onRendered() won't be called, so we cannot get there.
     // here make sure to get correct size when this img fully loaded.