diff --git a/core/modules/filters/backtranscludes.js b/core/modules/filters/backtranscludes.js
index 2451ab941..07ef9b254 100644
--- a/core/modules/filters/backtranscludes.js
+++ b/core/modules/filters/backtranscludes.js
@@ -6,7 +6,6 @@ module-type: filteroperator
 Filter operator for returning all the backtranscludes from a tiddler
 
 \*/
-(function(){
 "use strict";
 
 /*
@@ -19,5 +18,3 @@ exports.backtranscludes = function(source,operator,options) {
 	});
 	return results.makeTiddlerIterator(options.wiki);
 };
-
-})();
diff --git a/core/modules/filters/transcludes.js b/core/modules/filters/transcludes.js
index 0245dcaa4..5032e4255 100644
--- a/core/modules/filters/transcludes.js
+++ b/core/modules/filters/transcludes.js
@@ -6,7 +6,6 @@ module-type: filteroperator
 Filter operator for returning all the transcludes from a tiddler
 
 \*/
-(function(){
 "use strict";
 
 /*
@@ -19,5 +18,3 @@ exports.transcludes = function(source,operator,options) {
 	});
 	return results.makeTiddlerIterator(options.wiki);
 };
-
-})();
diff --git a/core/modules/parsers/wikiparser/rules/conditional.js b/core/modules/parsers/wikiparser/rules/conditional.js
index 4dccf75fb..3995b90dc 100644
--- a/core/modules/parsers/wikiparser/rules/conditional.js
+++ b/core/modules/parsers/wikiparser/rules/conditional.js
@@ -10,7 +10,6 @@ This is a <%if [{something}] %>Elephant<%elseif [{else}] %>Pelican<%else%>Crocod
 ```
 
 \*/
-(function(){
 "use strict";
 
 exports.name = "conditional";
@@ -113,5 +112,3 @@ exports.parseIfClause = function(filterCondition) {
 	// Return the parse tree node
 	return [listWidget];
 };
-
-})();
diff --git a/core/modules/utils/errors.js b/core/modules/utils/errors.js
index fac4b3fa7..40e0a4f8f 100644
--- a/core/modules/utils/errors.js
+++ b/core/modules/utils/errors.js
@@ -6,8 +6,6 @@ module-type: utils
 Custom errors for TiddlyWiki.
 
 \*/
-(function(){
-
 function TranscludeRecursionError() {
 	Error.apply(this,arguments);
 	this.signatures = Object.create(null);
@@ -19,5 +17,3 @@ TranscludeRecursionError.MAX_WIDGET_TREE_DEPTH = 1000;
 TranscludeRecursionError.prototype = Object.create(Error);
 
 exports.TranscludeRecursionError = TranscludeRecursionError;
-
-})();
diff --git a/core/modules/utils/repository.js b/core/modules/utils/repository.js
index 359f558b8..08d8828d9 100644
--- a/core/modules/utils/repository.js
+++ b/core/modules/utils/repository.js
@@ -6,7 +6,6 @@ module-type: utils
 Utilities for working with the TiddlyWiki repository file structure
 
 \*/
-(function(){
 "use strict";
 
 /*
@@ -45,5 +44,3 @@ exports.getAllPlugins = function(options) {
 	$tw.utils.each($tw.getLibraryItemSearchPaths($tw.config.languagesPath,options.ignoreEnvironmentVariables ? undefined : $tw.config.languagesEnvVar),collectPlugins);
 	return tiddlers;
 };
-
-})();
diff --git a/core/modules/widgets/data.js b/core/modules/widgets/data.js
index d51e2ba8b..50eafc63f 100644
--- a/core/modules/widgets/data.js
+++ b/core/modules/widgets/data.js
@@ -6,7 +6,6 @@ module-type: widget
 Widget to dynamically represent one or more tiddlers
 
 \*/
-(function(){
 "use strict";
 
 var Widget = require("$:/core/modules/widgets/widget.js").widget;
@@ -187,5 +186,3 @@ function hasPayloadChanged(a,b) {
 }
 
 exports.data = DataWidget;
-
-})();
diff --git a/core/modules/widgets/testcase.js b/core/modules/widgets/testcase.js
index cc7141867..ccdce7ac5 100644
--- a/core/modules/widgets/testcase.js
+++ b/core/modules/widgets/testcase.js
@@ -6,7 +6,6 @@ module-type: widget
 Widget to display a test case
 
 \*/
-(function(){
 "use strict";
 
 var Widget = require("$:/core/modules/widgets/widget.js").widget;
@@ -160,5 +159,3 @@ TestCaseWidget.prototype.refresh = function(changedTiddlers) {
 };
 
 exports["testcase"] = TestCaseWidget;
-
-})();