diff --git a/internal/graphics/command.go b/internal/graphics/command.go
index ccced488e..55202bd79 100644
--- a/internal/graphics/command.go
+++ b/internal/graphics/command.go
@@ -133,13 +133,13 @@ type replacePixelsCommand struct {
 }
 
 func (c *replacePixelsCommand) Exec(context *opengl.Context) error {
+	if err := c.dst.framebuffer.setAsViewport(context); err != nil {
+		return err
+	}
 	// Filling with non black or white color is required here for glTexSubImage2D.
 	// Very mysterious but this actually works (Issue #186)
 	// TODO: As shader bug was fixed at f537378f2a6a8ef56e1acf1c03034967b77c7b51,
 	// can we remove this?
-	if err := c.dst.framebuffer.setAsViewport(context); err != nil {
-		return err
-	}
 	if err := context.FillFramebuffer(0, 0, 0.5, 1); err != nil {
 		return err
 	}