diff -r 18c476d8b24f -r be89ffebd4f3 ui/winui/toolkit.cpp
--- a/ui/winui/toolkit.cpp	Sat Feb 21 20:02:31 2026 +0100
+++ b/ui/winui/toolkit.cpp	Sun Mar 15 12:06:03 2026 +0100
@@ -33,6 +33,9 @@
 #include <cx/allocator.h>
 #include <cx/mempool.h>
 
+#include <stdlib.h>
+#include <string.h>
+
 #include "../common/context.h"
 #include "../common/document.h"
 #include "../common/toolbar.h"
@@ -147,7 +150,7 @@
 }
 
 void ui_init(const char* appname, int argc, char** argv) {
-	application_name = appname;
+	application_name = appname ? strdup(appname) : NULL;
 
 	//ui_appsdk_bootstrap();