diff --git a/frontend-js/src/main/js/minerva.js b/frontend-js/src/main/js/minerva.js
index b2514003b69769e0fb3059dcebe9e361d3a492c5..c7b0a272bf10a691d7428350ab4dbfdc6c09aa62 100644
--- a/frontend-js/src/main/js/minerva.js
+++ b/frontend-js/src/main/js/minerva.js
@@ -104,7 +104,7 @@ function createDivStructure(element) {
   var splitBar = functions.createElement({
     type: "div",
     name: "minerva-plugin-split-bar",
-    style: "width:5px;height:100%;clear: both;display: table-cell;vertical-align:top",
+    style: "width:5px;height:100%;clear: both;display: table-cell;vertical-align:top;border-left:1px dotted gray;cursor:col-resize",
     content: "&nbsp"
   });
   element.appendChild(splitBar);
diff --git a/frontend-js/src/main/js/plugin/Plugin.js b/frontend-js/src/main/js/plugin/Plugin.js
index 960c24d71654c95fc9f0750b7a436edd0af86011..b42b1fc16b655df9a56348830de9527f1e1effe1 100644
--- a/frontend-js/src/main/js/plugin/Plugin.js
+++ b/frontend-js/src/main/js/plugin/Plugin.js
@@ -59,7 +59,7 @@ Plugin.prototype.load = function () {
     var error = false;
     try {
       // noinspection JSUnusedLocalSymbols
-      var define = function (pluginFunction) {
+      var minervaDefine = function (pluginFunction) {
         try {
           if (typeof pluginFunction === "function") {
             pluginData = pluginFunction();
diff --git a/frontend-js/testFiles/plugin-invalid/invalid_register.js b/frontend-js/testFiles/plugin-invalid/invalid_register.js
index f8b555f8c9aecccb91ace2d921e8964e8006ed11..607f1da2c32f227008e6e9c346d3ff580f499de2 100644
--- a/frontend-js/testFiles/plugin-invalid/invalid_register.js
+++ b/frontend-js/testFiles/plugin-invalid/invalid_register.js
@@ -1,4 +1,4 @@
-define(function () {
+minervaDefine(function () {
   return {
     register: function (object) {
       throw new Error("Let's crash");
diff --git a/frontend-js/testFiles/plugin-invalid/unclean-unregister.js b/frontend-js/testFiles/plugin-invalid/unclean-unregister.js
index a309c06a475b6ef5d444021d31eade224eea8e91..a7c00e2c55824505ed6740963cab18960fd29d72 100644
--- a/frontend-js/testFiles/plugin-invalid/unclean-unregister.js
+++ b/frontend-js/testFiles/plugin-invalid/unclean-unregister.js
@@ -1,4 +1,4 @@
-define(function () {
+minervaDefine(function () {
   return {
     register: function (minervaObject) {
       options = {
diff --git a/frontend-js/testFiles/plugin/empty-without-function.js b/frontend-js/testFiles/plugin/empty-without-function.js
index bafb6d13a6cf3b927941251b270111f11b70ffc2..e0b51b2161304fbaa3663e497b8f42deb0e8decb 100644
--- a/frontend-js/testFiles/plugin/empty-without-function.js
+++ b/frontend-js/testFiles/plugin/empty-without-function.js
@@ -1,4 +1,4 @@
-define({
+minervaDefine({
   register: function (object) {
     console.log("registering test plugin");
   },
diff --git a/frontend-js/testFiles/plugin/empty.js b/frontend-js/testFiles/plugin/empty.js
index a3fd24885e527b3933a46efdf362b82fbd403fbf..a8e14229f38ebf43e61642799887410b9a2364b3 100644
--- a/frontend-js/testFiles/plugin/empty.js
+++ b/frontend-js/testFiles/plugin/empty.js
@@ -1,4 +1,4 @@
-define(function () {
+minervaDefine(function () {
   return {
     register: function (object) {
       console.log("registering test plugin");
diff --git a/frontend-js/testFiles/plugin/highlight-something.js b/frontend-js/testFiles/plugin/highlight-something.js
index 985dec3860a6168245a2aa536fc3c15870438d95..be4c1edce0ed6594e08030917ac295713fb56194 100644
--- a/frontend-js/testFiles/plugin/highlight-something.js
+++ b/frontend-js/testFiles/plugin/highlight-something.js
@@ -1,4 +1,4 @@
-define(function () {
+minervaDefine(function () {
   return {
     register: function (minervaObject) {
       minervaObject.element.innerHTML = "<div><button id='show'>highlight something</button></div>";