diff --git a/common/edid.c b/common/edid.c
index 19410aa4fcc52c3ff993dfe8d64a5b470d419c1b..854d40c8f8b46817efdb251e026a3eaf1462749e 100644
--- a/common/edid.c
+++ b/common/edid.c
@@ -295,7 +295,7 @@ static void edid_print_dtd(struct edid_monitor_descriptor *monitor,
 
 		h_total = h_active + h_blanking;
 		v_total = v_active + v_blanking;
-		if (v_total * h_total)
+		if (v_total > 0 && h_total > 0)
 			vfreq = pixclock / (v_total * h_total);
 		else
 			vfreq = 1; /* Error case */