diff --git a/src/libs/utils/completingtextedit.cpp b/src/libs/utils/completingtextedit.cpp
index f32dcbbf88d..77f061c7b41 100644
--- a/src/libs/utils/completingtextedit.cpp
+++ b/src/libs/utils/completingtextedit.cpp
@@ -190,6 +190,20 @@ void CompletingTextEdit::focusInEvent(QFocusEvent *e)
     QTextEdit::focusInEvent(e);
 }
 
+bool CompletingTextEdit::event(QEvent *e)
+{
+    // workaround for QTCREATORBUG-9453
+    if (e->type() == QEvent::ShortcutOverride && completer()
+            && completer()->popup() && completer()->popup()->isVisible()) {
+        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
+        if (ke->key() == Qt::Key_Escape && !ke->modifiers()) {
+            ke->accept();
+            return true;
+        }
+    }
+    return QTextEdit::event(e);
+}
+
 } // namespace Utils
 
 #include "moc_completingtextedit.cpp"
diff --git a/src/libs/utils/completingtextedit.h b/src/libs/utils/completingtextedit.h
index 17b4600ee17..f7ece3e47e3 100644
--- a/src/libs/utils/completingtextedit.h
+++ b/src/libs/utils/completingtextedit.h
@@ -36,6 +36,7 @@
 
 QT_BEGIN_NAMESPACE
 class QCompleter;
+class QEvent;
 QT_END_NAMESPACE
 
 namespace Utils {
@@ -59,6 +60,7 @@ public:
 protected:
     void keyPressEvent(QKeyEvent *e);
     void focusInEvent(QFocusEvent *e);
+    bool event(QEvent *e);
 
 private:
     class CompletingTextEditPrivate *d;
diff --git a/src/libs/utils/fancylineedit.cpp b/src/libs/utils/fancylineedit.cpp
index 489d3022ce5..4df20ce614f 100644
--- a/src/libs/utils/fancylineedit.cpp
+++ b/src/libs/utils/fancylineedit.cpp
@@ -31,13 +31,15 @@
 #include "historycompleter.h"
 #include "qtcassert.h"
 
-#include <QDebug>
-#include <QPropertyAnimation>
+#include <QAbstractItemView>
 #include <QApplication>
+#include <QDebug>
+#include <QDesktopWidget>
+#include <QKeyEvent>
 #include <QMenu>
 #include <QPainter>
+#include <QPropertyAnimation>
 #include <QStyle>
-#include <QDesktopWidget>
 
 /*! Opens a menu at the specified widget position.
  * This functions computes the position where to show the menu, and opens it with
@@ -251,6 +253,20 @@ void FancyLineEdit::resizeEvent(QResizeEvent *)
     updateButtonPositions();
 }
 
+bool FancyLineEdit::event(QEvent *e)
+{
+    // workaround for QTCREATORBUG-9453
+    if (e->type() == QEvent::ShortcutOverride && completer()
+            && completer()->popup() && completer()->popup()->isVisible()) {
+        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
+        if (ke->key() == Qt::Key_Escape && !ke->modifiers()) {
+            ke->accept();
+            return true;
+        }
+    }
+    return QLineEdit::event(e);
+}
+
 void FancyLineEdit::setButtonPixmap(Side side, const QPixmap &buttonPixmap)
 {
     d->m_iconbutton[side]->setPixmap(buttonPixmap);
diff --git a/src/libs/utils/fancylineedit.h b/src/libs/utils/fancylineedit.h
index 3d08eb14858..fec5dced30e 100644
--- a/src/libs/utils/fancylineedit.h
+++ b/src/libs/utils/fancylineedit.h
@@ -35,6 +35,10 @@
 #include <QLineEdit>
 #include <QAbstractButton>
 
+QT_BEGIN_NAMESPACE
+class QEvent;
+QT_END_NAMESPACE
+
 namespace Utils {
 
 class FancyLineEditPrivate;
@@ -109,7 +113,8 @@ private slots:
     void iconClicked();
 
 protected:
-    virtual void resizeEvent(QResizeEvent *e);
+    void resizeEvent(QResizeEvent *e);
+    bool event(QEvent *e);
 
 private:
     // Unimplemented, to force the user to make a decision on