diff --git a/stepmania/src/RageDisplay_D3D.cpp b/stepmania/src/RageDisplay_D3D.cpp
index 91517731c7..0da11b09bd 100644
--- a/stepmania/src/RageDisplay_D3D.cpp
+++ b/stepmania/src/RageDisplay_D3D.cpp
@@ -322,8 +322,8 @@ void RageDisplay_D3D::GetDisplayResolutions( DisplayResolutions &out ) const
 float RageDisplay_D3D::GetMonitorAspectRatio() const
 {
 #if defined(XBOX)
-	// FIXME
-	return 4/3.f;
+	VideoModeParams p = GetActualVideoModeParams();
+	return p.width / (float)p.height;
 #else
 	return g_DesktopMode.Width / (float)g_DesktopMode.Height;
 #endif