diff --git a/src/mainboard/lenovo/x200/blc.c b/src/mainboard/lenovo/x200/blc.c
index 655be56..99def22d 100644
--- a/src/mainboard/lenovo/x200/blc.c
+++ b/src/mainboard/lenovo/x200/blc.c
@@ -38,7 +38,7 @@
 
 const char *mainboard_vbt_filename(void)
 {
-	u16 pwm_freq = get_blc_pwm_freq_value(gm45_get_lvds_edid_str());
+	u16 pwm_freq = get_blc_pwm_freq_value();
 
 	if (pwm_freq == 0) {
 		printk(BIOS_DEBUG,