diff --git a/src/main/comments.js b/src/main/comments.js
index 4d49f4f7..3f5d776d 100644
--- a/src/main/comments.js
+++ b/src/main/comments.js
@@ -443,7 +443,10 @@ function printTrailingComment(commentPath, print, options) {
     return concat([" ", contents]);
   }
 
-  return concat([lineSuffix(" " + contents), !isBlock ? breakParent : ""]);
+  return concat([
+    lineSuffix(concat([" ", contents])),
+    !isBlock ? breakParent : ""
+  ]);
 }
 
 function printDanglingComments(path, options, sameIndent, filter) {