diff --git a/kcms/translations/package/contents/ui/main.qml b/kcms/translations/package/contents/ui/main.qml
--- a/kcms/translations/package/contents/ui/main.qml
+++ b/kcms/translations/package/contents/ui/main.qml
@@ -220,10 +220,14 @@
                 onTriggered: kcm.selectedTranslationsModel.move(index, 0)
             },
             Kirigami.Action {
-                enabled: !model.IsMissing
+                property bool removing: false
+                enabled: removing || !model.IsMissing && languagesList.count > 1
                 iconName: "list-remove"
                 tooltip: i18nc("@info:tooltip", "Remove")
-                onTriggered: kcm.selectedTranslationsModel.remove(model.LanguageCode)
+                onTriggered: {
+                    removing = true; // Don't crash by re-evaluating `enabled` during destruction.
+                    kcm.selectedTranslationsModel.remove(model.LanguageCode);
+                }
             }]
         }
     }
diff --git a/kcms/translations/translationsmodel.cpp b/kcms/translations/translationsmodel.cpp
--- a/kcms/translations/translationsmodel.cpp
+++ b/kcms/translations/translationsmodel.cpp
@@ -213,7 +213,7 @@
 
     int index = m_selectedLanguages.indexOf(languageCode);
 
-    if (index < 1) {
+    if (index < 0 || m_selectedLanguages.count() < 2) {
         return;
     }