diff --git a/libs/ui/input/config/kis_action_shortcuts_model.cpp b/libs/ui/input/config/kis_action_shortcuts_model.cpp
--- a/libs/ui/input/config/kis_action_shortcuts_model.cpp
+++ b/libs/ui/input/config/kis_action_shortcuts_model.cpp
@@ -24,6 +24,7 @@
 #include <KLocalizedString>
 #include <QMetaClassInfo>
 #include <QKeySequence>
+#include <QMessageBox>
 
 #include "kis_icon_utils.h"
 
@@ -339,6 +340,10 @@
         KisShortcutConfiguration *s = d->shortcuts.at(i);
 
         if (!d->action->isShortcutRequired(s->mode()) && d->shortcutModeCount(s->mode()) < 2) {
+            QMessageBox shortcutMessage;
+            shortcutMessage.setText(i18n("Deleting last shortcut for this action!"));
+            shortcutMessage.setInformativeText(i18n("It is not allowed to erase some default shortcuts. Modify it instead."));
+            shortcutMessage.exec();
             continue;
         }