diff --git a/lib/NormalModule.js b/lib/NormalModule.js
index 621aa25f5..d2a091f3c 100644
--- a/lib/NormalModule.js
+++ b/lib/NormalModule.js
@@ -82,6 +82,7 @@ NormalModule.prototype.source = function(dependencyTemplates, outputOptions, req
 	var _source = this._source;
 	if(!_source) return new RawSource("throw new Error('No source availible');");
 	var source = new ReplaceSource(_source);
+	var topLevelBlock = this;
 	function doDep(dep) {
 		var template = dependencyTemplates.get(dep.Class);
 		if(!template) throw new Error("No template for dependency: " + dep.Class.name);
@@ -106,7 +107,9 @@ NormalModule.prototype.source = function(dependencyTemplates, outputOptions, req
 				if(varNames.length == 0) return;
 
 				varStartCode += "/* WEBPACK VAR INJECTION */(function(require, " + varNames.join(", ") + ") {";
-				varEndCode = "}.call(exports, require, " + varExpressions.map(function(e) {return e.source()}).join(", ") + "))" + varEndCode;
+				// exports === this in the topLevelBlock, but exports do compress better...
+				varEndCode = (topLevelBlock === block ? "}.call(exports, require, " : "}.call(this, require, ") +
+					varExpressions.map(function(e) {return e.source()}).join(", ") + "))" + varEndCode;
 
 				varNames.length = 0;
 				varExpressions.length = 0;