diff --git a/src/plugins/GreaseMonkey/gm_manager.cpp b/src/plugins/GreaseMonkey/gm_manager.cpp
index 5d3018dd6..2be6d40d6 100644
--- a/src/plugins/GreaseMonkey/gm_manager.cpp
+++ b/src/plugins/GreaseMonkey/gm_manager.cpp
@@ -138,7 +138,8 @@ void GM_Manager::enableScript(GM_Script* script)
     script->setEnabled(true);
     m_disabledScripts.removeOne(script->fullName());
 
-    mApp->webProfile()->scripts().insert(script->webScript());
+    QWebEngineScriptCollection &collection = mApp->webProfile()->scripts();
+    collection.insert(script->webScript());
 }
 
 void GM_Manager::disableScript(GM_Script* script)
@@ -146,7 +147,8 @@ void GM_Manager::disableScript(GM_Script* script)
     script->setEnabled(false);
     m_disabledScripts.append(script->fullName());
 
-    mApp->webProfile()->scripts().remove(script->webScript());
+    QWebEngineScriptCollection &collection = mApp->webProfile()->scripts();
+    collection.remove(collection.findScript(script->fullName()));
 }
 
 bool GM_Manager::addScript(GM_Script* script)
@@ -156,7 +158,10 @@ bool GM_Manager::addScript(GM_Script* script)
     }
 
     m_scripts.append(script);
-    mApp->webProfile()->scripts().insert(script->webScript());
+    connect(script, &GM_Script::scriptChanged, this, &GM_Manager::scriptChanged);
+
+    QWebEngineScriptCollection &collection = mApp->webProfile()->scripts();
+    collection.insert(script->webScript());
 
     emit scriptsChanged();
     return true;
@@ -169,7 +174,9 @@ bool GM_Manager::removeScript(GM_Script* script, bool removeFile)
     }
 
     m_scripts.removeOne(script);
-    mApp->webProfile()->scripts().insert(script->webScript());
+
+    QWebEngineScriptCollection &collection = mApp->webProfile()->scripts();
+    collection.remove(collection.findScript(script->fullName()));
 
     m_disabledScripts.removeOne(script->fullName());
 
@@ -229,6 +236,17 @@ void GM_Manager::load()
     //m_jsObject->setSettingsFile(m_settingsPath + QL1S("/extensions.ini"));
 }
 
+void GM_Manager::scriptChanged()
+{
+    GM_Script *script = qobject_cast<GM_Script*>(sender());
+    if (!script)
+        return;
+
+    QWebEngineScriptCollection &collection = mApp->webProfile()->scripts();
+    collection.remove(collection.findScript(script->fullName()));
+    collection.insert(script->webScript());
+}
+
 bool GM_Manager::canRunOnScheme(const QString &scheme)
 {
     return (scheme == QLatin1String("http") || scheme == QLatin1String("https")
diff --git a/src/plugins/GreaseMonkey/gm_manager.h b/src/plugins/GreaseMonkey/gm_manager.h
index 5064d97b4..87e2ca0f8 100644
--- a/src/plugins/GreaseMonkey/gm_manager.h
+++ b/src/plugins/GreaseMonkey/gm_manager.h
@@ -71,6 +71,7 @@ public slots:
 
 private slots:
     void load();
+    void scriptChanged();
 
 private:
     QString m_settingsPath;
diff --git a/src/plugins/GreaseMonkey/gm_script.cpp b/src/plugins/GreaseMonkey/gm_script.cpp
index d84b45ec4..bd291957f 100644
--- a/src/plugins/GreaseMonkey/gm_script.cpp
+++ b/src/plugins/GreaseMonkey/gm_script.cpp
@@ -23,6 +23,7 @@
 
 #include <QFile>
 #include <QStringList>
+#include <QWebEngineScript>
 #include <QCryptographicHash>
 
 GM_Script::GM_Script(GM_Manager* manager, const QString &filePath)
@@ -135,7 +136,13 @@ QString GM_Script::fileName() const
 
 QWebEngineScript GM_Script::webScript() const
 {
-    return m_webScript;
+    QWebEngineScript script;
+    script.setName(fullName());
+    script.setInjectionPoint(startAt() == DocumentStart ? QWebEngineScript::DocumentCreation : QWebEngineScript::DocumentReady);
+    script.setWorldId(QWebEngineScript::MainWorld);
+    script.setRunsOnSubFrames(!m_noframes);
+    script.setSourceCode(QSL("%1\n%2\n%3").arg(m_metadata, m_manager->bootstrapScript(), m_script));
+    return script;
 }
 
 bool GM_Script::match(const QString &urlString)
@@ -285,11 +292,4 @@ void GM_Script::parseScript()
     const QString gmValues = m_manager->valuesScript().arg(nspace);
 
     m_script = QSL("(function(){%1\n%2\n%3\n})();").arg(gmValues, m_manager->requireScripts(requireList), script);
-
-    // Create QWebEngineScript
-    m_webScript.setName(fullName());
-    m_webScript.setInjectionPoint(startAt() == DocumentStart ? QWebEngineScript::DocumentCreation : QWebEngineScript::DocumentReady);
-    m_webScript.setWorldId(QWebEngineScript::MainWorld);
-    m_webScript.setRunsOnSubFrames(!m_noframes);
-    m_webScript.setSourceCode(QSL("%1\n%2\n%3").arg(m_metadata, m_manager->bootstrapScript(), m_script));
 }
diff --git a/src/plugins/GreaseMonkey/gm_script.h b/src/plugins/GreaseMonkey/gm_script.h
index 953d31fe0..a4391f694 100644
--- a/src/plugins/GreaseMonkey/gm_script.h
+++ b/src/plugins/GreaseMonkey/gm_script.h
@@ -23,9 +23,8 @@
 #include <QObject>
 #include <QVector>
 #include <QUrl>
-#include <QWebEngineScript>
 
-class QWebFrame;
+class QWebEngineScript;
 
 class GM_Manager;
 class GM_UrlMatcher;
@@ -95,8 +94,6 @@ private:
     QString m_fileName;
     bool m_enabled;
     bool m_valid;
-
-    QWebEngineScript m_webScript;
 };
 
 #endif // GM_SCRIPT_H