diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8f7ed73..32c8c95 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4994,7 +4994,7 @@
 	} else if (is_sdvo && is_tv)
 		factor = 20;
 
-	if (clock.m1 < factor * clock.n)
+	if (clock.m < factor * clock.n)
 		fp |= FP_CB_TUNE;
 
 	dpll = 0;