diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 885932488282cedcf929d664ea2ed7194478f6cd..cf516ad1b0294c8b9a8152d5364c62d2d2eb696b 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -951,7 +951,7 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
 				  GEN9_ENABLE_YV12_BUGFIX);
 	}
 
-	/* Wa4x4STCOptimizationDisable:skl */
+	/* Wa4x4STCOptimizationDisable:skl,bxt */
 	WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);
 
 	/* WaDisablePartialResolveInVc:skl */