--- a/ui/gtk/toolkit.c	Wed Dec 17 18:31:20 2025 +0100
+++ b/ui/gtk/toolkit.c	Thu Dec 18 17:50:15 2025 +0100
@@ -489,7 +489,7 @@
     }
     if(style_classes) {
         cxstring *cls = NULL;
-        size_t numClasses = cx_strsplit_a(cxDefaultAllocator, cx_str(style_classes), CX_STR(" "), 128, &cls);
+        size_t numClasses = cx_strsplit_a(cxDefaultAllocator, cx_str(style_classes), cx_str(" "), 128, &cls);
         for(int i=0;i<numClasses;i++) {
             cxmutstr m = cx_strdup(cls[i]);
 #if GTK_MAJOR_VERSION >= 4