diff --git a/drivers/misc/vexpress-syscfg.c b/drivers/misc/vexpress-syscfg.c
index 6c3591cdf8555ff00e576c33c55a2bdbce3ea61e..a3c6c773d9dc80c9e583d4db53cffb23c429d473 100644
--- a/drivers/misc/vexpress-syscfg.c
+++ b/drivers/misc/vexpress-syscfg.c
@@ -61,7 +61,7 @@ static int vexpress_syscfg_exec(struct vexpress_syscfg_func *func,
 	int tries;
 	long timeout;
 
-	if (WARN_ON(index > func->num_templates))
+	if (WARN_ON(index >= func->num_templates))
 		return -EINVAL;
 
 	command = readl(syscfg->base + SYS_CFGCTRL);