--- a/ui/cocoa/button.m	Sun Mar 15 12:06:03 2026 +0100
+++ b/ui/cocoa/button.m	Sun Mar 15 12:07:05 2026 +0100
@@ -370,7 +370,7 @@
     
     CxJsonWriter writer = cxJsonWriterCompact();
     CxBuffer buf;
-    cxBufferInit(&buf, NULL, 128, NULL, CX_BUFFER_AUTO_EXTEND);
+    cxBufferInit(&buf, NULL, NULL, 128, bCX_BUFFER_AUTO_EXTEND);
     cxJsonWrite(&buf, obj, (cx_write_func)cxBufferWrite, &writer);
     cxJsonValueFree(obj);
     cxBufferTerminate(&buf);