diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 04df407092b1..c9f3d65893b0 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -943,7 +943,7 @@ struct dmub_cmd_PLAT_54186_wa {
 		uint8_t grph_stereo : 1; /**< 1 if stereo */
 		uint32_t reserved : 21; /**< Reserved */
 	} flip_params; /**< Pageflip parameters */
-	uint32_t reserved[9]; /**< Reserved bits */
+	uint32_t reserved[8]; /**< Reserved bits */
 };
 
 /**