diff --git a/examples/directx9_example/imgui_impl_dx9.cpp b/examples/directx9_example/imgui_impl_dx9.cpp
index b726e50..635e2c6 100644
--- a/examples/directx9_example/imgui_impl_dx9.cpp
+++ b/examples/directx9_example/imgui_impl_dx9.cpp
@@ -57,7 +57,8 @@
         }
     }
     g_pVB->Unlock();
-
+    g_pd3dDevice->SetPixelShader(NULL);
+    g_pd3dDevice->SetVertexShader(NULL);
     g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
     g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );