diff --git a/src/plugins/qmljseditor/qmljseditor.cpp b/src/plugins/qmljseditor/qmljseditor.cpp
index 13a85a8c5fc..a926efc45c6 100644
--- a/src/plugins/qmljseditor/qmljseditor.cpp
+++ b/src/plugins/qmljseditor/qmljseditor.cpp
@@ -58,7 +58,6 @@
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/icore.h>
 #include <coreplugin/id.h>
-#include <coreplugin/infobar.h>
 #include <coreplugin/modemanager.h>
 
 #include <extensionsystem/pluginmanager.h>
@@ -112,7 +111,6 @@ QmlJSEditorWidget::QmlJSEditorWidget()
 {
     m_outlineCombo = 0;
     m_contextPane = 0;
-    m_firstSementicInfo = true;
     m_findReferences = new FindReferences(this);
 
     setLanguageSettingsId(QmlJSTools::Constants::QML_JS_SETTINGS_ID);
@@ -949,16 +947,6 @@ void QmlJSEditorWidget::semanticInfoUpdated(const SemanticInfo &semanticInfo)
         }
     }
 
-    if (m_firstSementicInfo) {
-        m_firstSementicInfo = false;
-        if (semanticInfo.document->language() == Dialect::QmlQtQuick2Ui) {
-            InfoBarEntry info(Id(Constants::QML_UI_FILE_WARNING),
-                                    tr("This file should only be edited in <b>Design</b> mode."));
-            info.setCustomButtonInfo(tr("Switch Mode"), []() { ModeManager::activateMode(Core::Constants::MODE_DESIGN); });
-            textDocument()->infoBar()->addInfo(info);
-        }
-    }
-
     updateUses();
 }
 
diff --git a/src/plugins/qmljseditor/qmljseditor.h b/src/plugins/qmljseditor/qmljseditor.h
index b27029cd17c..5701d823f13 100644
--- a/src/plugins/qmljseditor/qmljseditor.h
+++ b/src/plugins/qmljseditor/qmljseditor.h
@@ -139,8 +139,6 @@ private:
     int m_oldCursorPosition;
 
     FindReferences *m_findReferences;
-
-    bool m_firstSementicInfo;
 };
 
 
diff --git a/src/plugins/qmljseditor/qmljseditordocument.cpp b/src/plugins/qmljseditor/qmljseditordocument.cpp
index cf81dd9a4f3..5452de327e2 100644
--- a/src/plugins/qmljseditor/qmljseditordocument.cpp
+++ b/src/plugins/qmljseditor/qmljseditordocument.cpp
@@ -37,6 +37,10 @@
 #include "qmljssemanticinfoupdater.h"
 #include "qmloutlinemodel.h"
 
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/infobar.h>
+#include <coreplugin/modemanager.h>
+
 #include <qmljstools/qmljsindenter.h>
 #include <qmljstools/qmljsmodelmanager.h>
 #include <qmljstools/qmljsqtstylecodeformatter.h>
@@ -520,6 +524,19 @@ void QmlJSEditorDocumentPrivate::acceptNewSemanticInfo(const SemanticInfo &seman
     m_outlineModelNeedsUpdate = true;
     m_semanticHighlightingNecessary = true;
 
+    if (m_firstSementicInfo) {
+        m_firstSementicInfo = false;
+        if (semanticInfo.document->language() == Dialect::QmlQtQuick2Ui
+                && !q->infoBar()->containsInfo(Core::Id(Constants::QML_UI_FILE_WARNING))) {
+            Core::InfoBarEntry info(Core::Id(Constants::QML_UI_FILE_WARNING),
+                                    tr("This file should only be edited in <b>Design</b> mode."));
+            info.setCustomButtonInfo(tr("Switch Mode"), []() {
+                Core::ModeManager::activateMode(Core::Constants::MODE_DESIGN);
+            });
+            q->infoBar()->addInfo(info);
+        }
+    }
+
     emit q->semanticInfoUpdated(m_semanticInfo); // calls triggerPendingUpdates as necessary
 }
 
diff --git a/src/plugins/qmljseditor/qmljseditordocument_p.h b/src/plugins/qmljseditor/qmljseditordocument_p.h
index d3c41d93ef2..174578a0b31 100644
--- a/src/plugins/qmljseditor/qmljseditordocument_p.h
+++ b/src/plugins/qmljseditor/qmljseditordocument_p.h
@@ -75,6 +75,7 @@ public:
     Internal::SemanticHighlighter *m_semanticHighlighter;
     bool m_semanticHighlightingNecessary;
     bool m_outlineModelNeedsUpdate;
+    bool m_firstSementicInfo = true;
     QTimer m_updateOutlineModelTimer;
     Internal::QmlOutlineModel *m_outlineModel;
 };