diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 1331efb4876c..3148038747b6 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -32,6 +32,7 @@
 #include <linux/byteorder/generic.h>
 #include <linux/cec.h>
 #include <linux/export.h>
+#include <linux/fb.h> /* for KHZ2PICOS() */
 #include <linux/hdmi.h>
 #include <linux/i2c.h>
 #include <linux/kernel.h>