diff --git a/src/plugins/debugger/qml/qmladapter.h b/src/plugins/debugger/qml/qmladapter.h
index 67033ba4e36..266f55ff941 100644
--- a/src/plugins/debugger/qml/qmladapter.h
+++ b/src/plugins/debugger/qml/qmladapter.h
@@ -45,6 +45,8 @@ class QmlDebugConnection;
 class QDebugMessageClient;
 }
 
+using namespace QmlDebug;
+
 namespace Debugger {
 
 class DebuggerEngine;
@@ -54,8 +56,6 @@ class BaseQmlDebuggerClient;
 class QmlAdapterPrivate;
 } // namespace Internal
 
-using namespace QmlDebug;
-
 class DEBUGGER_EXPORT QmlAdapter : public QObject
 {
     Q_OBJECT
diff --git a/src/plugins/qmljsinspector/qmljsclientproxy.h b/src/plugins/qmljsinspector/qmljsclientproxy.h
index f89f41b3100..3869b5d2d9c 100644
--- a/src/plugins/qmljsinspector/qmljsclientproxy.h
+++ b/src/plugins/qmljsinspector/qmljsclientproxy.h
@@ -38,6 +38,8 @@
 
 QT_FORWARD_DECLARE_CLASS(QUrl)
 
+using namespace QmlDebug;
+
 namespace Debugger {
 class QmlAdapter;
 }
@@ -53,7 +55,6 @@ namespace Internal {
 class InspectorPlugin;
 class QmlToolsClient;
 
-using namespace QmlDebug;
 
 class ClientProxy : public QObject
 {
diff --git a/src/plugins/qmljsinspector/qmljsinspector.h b/src/plugins/qmljsinspector/qmljsinspector.h
index c755f666691..e7864a0bb86 100644
--- a/src/plugins/qmljsinspector/qmljsinspector.h
+++ b/src/plugins/qmljsinspector/qmljsinspector.h
@@ -46,6 +46,8 @@
 #include <QAction>
 #include <QObject>
 
+using namespace QmlDebug;
+
 namespace ProjectExplorer {
 class Project;
 class Environment;
@@ -73,8 +75,6 @@ class InspectorSettings;
 class ContextCrumblePath;
 class QmlJSLiveTextPreview;
 
-using namespace QmlDebug;
-
 class InspectorUi : public QObject
 {
     Q_OBJECT
diff --git a/src/plugins/qmljsinspector/qmljslivetextpreview.h b/src/plugins/qmljsinspector/qmljslivetextpreview.h
index 54f29fcc449..e1ba4ed5ab5 100644
--- a/src/plugins/qmljsinspector/qmljslivetextpreview.h
+++ b/src/plugins/qmljsinspector/qmljslivetextpreview.h
@@ -43,6 +43,8 @@
 
 QT_FORWARD_DECLARE_CLASS(QTextDocument)
 
+using namespace QmlDebug;
+
 namespace Core {
 class IEditor;
 }
@@ -56,7 +58,6 @@ namespace Internal {
 
 class ClientProxy;
 
-using namespace QmlDebug;
 
 class QmlJSLiveTextPreview : public QObject
 {
diff --git a/src/plugins/qmljsinspector/qmljspropertyinspector.h b/src/plugins/qmljsinspector/qmljspropertyinspector.h
index 97fa5efbd07..64366d2f912 100644
--- a/src/plugins/qmljsinspector/qmljspropertyinspector.h
+++ b/src/plugins/qmljsinspector/qmljspropertyinspector.h
@@ -41,6 +41,8 @@
 
 #include "customcolordialog.h"
 
+using namespace QmlDebug;
+
 namespace Utils {
 class SavedAction;
 }
@@ -48,8 +50,6 @@ class SavedAction;
 namespace QmlJSInspector {
 namespace Internal {
 
-using namespace QmlDebug;
-
 class PropertyEditDelegate;
 
 class ExpressionEdit : public QDialog