diff --git a/src/Gui/InputField.cpp b/src/Gui/InputField.cpp
index 62c65832df..d03a521d4d 100644
--- a/src/Gui/InputField.cpp
+++ b/src/Gui/InputField.cpp
@@ -710,6 +710,7 @@ void InputField::wheelEvent (QWheelEvent * event)
 
 void InputField::fixup(QString& input) const
 {
+    input.remove(locale().groupSeparator());
     if (locale().negativeSign() != QLatin1Char('-'))
         input.replace(locale().negativeSign(), QLatin1Char('-'));
     if (locale().positiveSign() != QLatin1Char('+'))