diff --git a/src/gui/widget/yaft/yaft_priv.cpp b/src/gui/widget/yaft/yaft_priv.cpp
index a23bb1315..f923c0bd4 100644
--- a/src/gui/widget/yaft/yaft_priv.cpp
+++ b/src/gui/widget/yaft/yaft_priv.cpp
@@ -749,8 +749,8 @@ void YaFT_p::draw_line(int line)
 
 	if (fb.dy_min > line * CELL_HEIGHT)
 		fb.dy_min = line * CELL_HEIGHT;
-	if (fb.dy_max < (line+1) * CELL_HEIGHT - 1)
-		fb.dy_max = (line+1) * CELL_HEIGHT - 1;
+	if (fb.dy_max < (line+1) * CELL_HEIGHT)
+		fb.dy_max = (line+1) * CELL_HEIGHT;
 
 	for (col = 0; col < cols; col++) {
 		/* target cell */