diff --git a/src/babel/generation/generators/expressions.js b/src/babel/generation/generators/expressions.js
index e08aeb168e..cfc6b3d541 100644
--- a/src/babel/generation/generators/expressions.js
+++ b/src/babel/generation/generators/expressions.js
@@ -106,7 +106,7 @@ var buildYieldAwait = function (keyword) {
     }
 
     if (node.argument) {
-      this.space();
+      this.push(" ");
       print(node.argument);
     }
   };