diff --git a/include/hamlib/rig.h b/include/hamlib/rig.h
index b68447b45..462bae519 100644
--- a/include/hamlib/rig.h
+++ b/include/hamlib/rig.h
@@ -2643,7 +2643,7 @@ rig_need_debug HAMLIB_PARAMS((enum rig_debug_level_e debug_level));
 #ifndef __cplusplus
 #ifdef __GNUC__
 // doing the debug macro with a dummy sprintf allows gcc to check the format string
-#define rig_debug(debug_level,fmt,...) { char xxxbuf[756]="";snprintf(xxxbuf,sizeof(xxxbuf),fmt,__VA_ARGS__);rig_debug(debug_level,fmt,##__VA_ARGS__); }
+#define rig_debug(debug_level,fmt,...) { char xxxbuf[16384]="";snprintf(xxxbuf,sizeof(xxxbuf),fmt,__VA_ARGS__);rig_debug(debug_level,fmt,##__VA_ARGS__); }
 #endif
 #endif
 extern HAMLIB_EXPORT(void)