diff --git a/dlls/d3dx9_36/math.c b/dlls/d3dx9_36/math.c
index 0afb36bb4d0..10623f7c024 100644
--- a/dlls/d3dx9_36/math.c
+++ b/dlls/d3dx9_36/math.c
@@ -1743,6 +1743,9 @@ D3DXVECTOR2* WINAPI D3DXVec2TransformCoordArray(D3DXVECTOR2* out, UINT outstride
 D3DXVECTOR2* WINAPI D3DXVec2TransformNormal(D3DXVECTOR2 *pout, const D3DXVECTOR2 *pv, const D3DXMATRIX *pm)
 {
     const D3DXVECTOR2 v = *pv;
+
+    TRACE("pout %p, pv %p, pm %p", pout, pv, pm);
+
     pout->x = pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y;
     pout->y = pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y;
     return pout;