diff --git a/NEWS.md b/NEWS.md
index a1245aab7..7096d56ad 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -34,6 +34,9 @@
 * mkvmerge: DTS reader: fixed handling of buffers with an odd length when
   byte-swapped DTS is detected so that mkvmerge doesn't abort with a failed
   assertion. Found by fuzzying.
+* MKVToolNix GIU: IETF BCP 47/RFC 5646 language tags: the GUI will no longer
+  open the language dialog when clicking on a disabled language display
+  widget.
 
 
 # Version 50.0.0 "Awakenings" 2020-09-06
diff --git a/src/mkvtoolnix-gui/util/language_display_widget.cpp b/src/mkvtoolnix-gui/util/language_display_widget.cpp
index 5a3832e00..370bab07d 100644
--- a/src/mkvtoolnix-gui/util/language_display_widget.cpp
+++ b/src/mkvtoolnix-gui/util/language_display_widget.cpp
@@ -227,7 +227,8 @@ LanguageDisplayWidget::eventFilter(QObject *obj,
   auto &p = *p_func();
 
   if ((obj == p.ui->lLanguage) && (ev->type() == QEvent::MouseButtonRelease)) {
-    editLanguage();
+    if (p.ui->lLanguage->isEnabled())
+      editLanguage();
     return true;
   }