diff --git a/tools/bootconfig/include/linux/printk.h b/tools/bootconfig/include/linux/printk.h
index 017bcd6912a5cbc0c830e001abed2f9e17f2863e..e978a63d3222c04cd72788547b421deafdd38517 100644
--- a/tools/bootconfig/include/linux/printk.h
+++ b/tools/bootconfig/include/linux/printk.h
@@ -7,7 +7,7 @@
 /* controllable printf */
 extern int pr_output;
 #define printk(fmt, ...)	\
-	(pr_output ? printf(fmt, __VA_ARGS__) : 0)
+	(pr_output ? printf(fmt, ##__VA_ARGS__) : 0)
 
 #define pr_err printk
 #define pr_warn	printk