diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
index 562fa7df263704503ea14c8be2127597cb8d8589..98e63d870139db0c9956f4446d3e298eb2964e7a 100644
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@@ -19,7 +19,7 @@
 #define DRM_HDCP_RI_LEN				2
 #define DRM_HDCP_V_PRIME_PART_LEN		4
 #define DRM_HDCP_V_PRIME_NUM_PARTS		5
-#define DRM_HDCP_NUM_DOWNSTREAM(x)		(x & 0x3f)
+#define DRM_HDCP_NUM_DOWNSTREAM(x)		(x & 0x7f)
 #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x)	(x & BIT(3))
 #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x)		(x & BIT(7))