diff --git a/internal/graphics/command.go b/internal/graphics/command.go
index 5beb3aa2f..010f21759 100644
--- a/internal/graphics/command.go
+++ b/internal/graphics/command.go
@@ -213,8 +213,7 @@ func (c *drawImageCommand) Exec(indexOffsetInBytes int) error {
 	if n == 0 {
 		return nil
 	}
-	_, dh := c.dst.Size()
-	proj := f.projectionMatrix(dh)
+	proj := f.projectionMatrix()
 	theOpenGLState.useProgram(proj, c.src.texture.native, c.dst, c.src, c.color, c.filter)
 	// TODO: We should call glBindBuffer here?
 	// The buffer is already bound at begin() but it is counterintuitive.
diff --git a/internal/graphics/framebuffer.go b/internal/graphics/framebuffer.go
index 66cec60d8..a4f941226 100644
--- a/internal/graphics/framebuffer.go
+++ b/internal/graphics/framebuffer.go
@@ -103,7 +103,7 @@ func (f *framebuffer) setAsViewport() {
 // A projection matrix converts the coodinates on the framebuffer
 // (0, 0) - (viewport width, viewport height)
 // to the normalized device coodinates (-1, -1) - (1, 1) with adjustment.
-func (f *framebuffer) projectionMatrix(height int) []float32 {
+func (f *framebuffer) projectionMatrix() []float32 {
 	if f.proMatrix != nil {
 		return f.proMatrix
 	}