diff --git a/lib/handlebars/compiler/compiler.js b/lib/handlebars/compiler/compiler.js
index 7cac316b..a98728da 100644
--- a/lib/handlebars/compiler/compiler.js
+++ b/lib/handlebars/compiler/compiler.js
@@ -797,7 +797,7 @@ Handlebars.JavaScriptCompiler = function() {};
     // so a `helperMissing` fallback is not required.
     invokeKnownHelper: function(paramSize, name) {
       var helper = this.setupHelper(paramSize, name);
-      this.pushStack(helper.name + ".call(" + helper.callParams + ")");
+      this.pushStack(helper.name + ".call(" + helper.callParams + ")", true);
     },
 
     // [invokeAmbiguous]