diff --git a/src/Gui/Widgets.cpp b/src/Gui/Widgets.cpp
index db3dfd1233..c5940191bb 100644
--- a/src/Gui/Widgets.cpp
+++ b/src/Gui/Widgets.cpp
@@ -382,6 +382,11 @@ bool AccelLineEdit::isNone() const
  */
 void AccelLineEdit::keyPressEvent (QKeyEvent * e)
 {
+    if (isReadOnly()) {
+        QLineEdit::keyPressEvent(e);
+        return;
+    }
+
     QString txtLine = text();
 
     int key = e->key();