diff --git a/src/plugins/qmljseditor/qmljseditingsettingspage.cpp b/src/plugins/qmljseditor/qmljseditingsettingspage.cpp
index c0e16b12887..3aa83bfe5b7 100644
--- a/src/plugins/qmljseditor/qmljseditingsettingspage.cpp
+++ b/src/plugins/qmljseditor/qmljseditingsettingspage.cpp
@@ -45,7 +45,7 @@ const char CUSTOM_COMMAND[] = "QmlJSEditor.useCustomFormatCommand";
 const char CUSTOM_ANALYZER[] = "QmlJSEditor.useCustomAnalyzer";
 const char DISABLED_MESSAGES[] = "QmlJSEditor.disabledMessages";
 const char DISABLED_MESSAGES_NONQUICKUI[] = "QmlJSEditor.disabledMessagesNonQuickUI";
-const char DEFAULT_CUSTOM_FORMAT_COMMAND[] = "%{CurrentDocument:Project:QT_HOST_BINS}/qmlformat";
+const char DEFAULT_CUSTOM_FORMAT_COMMAND[] = "%{CurrentDocument:Project:QT_HOST_BINS}/qmlformat%{HostOs:ExecutableSuffix}";
 
 using namespace QmlJSEditor::Internal;
 using namespace Utils;