diff --git a/graphicscontext.go b/graphicscontext.go
index b326c1afa..758480587 100644
--- a/graphicscontext.go
+++ b/graphicscontext.go
@@ -64,8 +64,8 @@ func (c *graphicsContext) SetSize(screenWidth, screenHeight int, screenScale flo
 	}
 	c.offscreen = newVolatileImage(screenWidth, screenHeight)
 
-	w := int(float64(screenWidth) * screenScale)
-	h := int(float64(screenHeight) * screenScale)
+	w := int(math.Ceil(float64(screenWidth) * screenScale))
+	h := int(math.Ceil(float64(screenHeight) * screenScale))
 	px0, py0, px1, py1 := ui.ScreenPadding()
 	c.screen = newImageWithScreenFramebuffer(w+int(math.Ceil(px0+px1)), h+int(math.Ceil(py0+py1)))
 	c.screenWidth = w