diff --git a/src/win/win_d3d.cpp b/src/win/win_d3d.cpp
index 2b87e1e..2c85469 100644
--- a/src/win/win_d3d.cpp
+++ b/src/win/win_d3d.cpp
@@ -180,7 +180,7 @@ d3d_blit_fs(int x, int y, int y1, int y2, int w, int h)
 {
     HRESULT hr = D3D_OK;
     HRESULT hbsr = D3D_OK;
-    VOID* pVoid;
+    VOID* pVoid = 0;
     D3DLOCKED_RECT dr;
     RECT w_rect;
     int yy;