diff --git a/dlls/d3dx9_36/surface.c b/dlls/d3dx9_36/surface.c
index 821d51e9fa5..d490cef0d79 100644
--- a/dlls/d3dx9_36/surface.c
+++ b/dlls/d3dx9_36/surface.c
@@ -656,7 +656,7 @@ HRESULT WINAPI D3DXGetImageInfoFromFileA(LPCSTR file, D3DXIMAGE_INFO *info)
     if( !file ) return D3DERR_INVALIDCALL;
 
     strlength = MultiByteToWideChar(CP_ACP, 0, file, -1, NULL, 0);
-    widename = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlength * sizeof(WCHAR));
+    widename = HeapAlloc(GetProcessHeap(), 0, strlength * sizeof(*widename));
     MultiByteToWideChar(CP_ACP, 0, file, -1, widename, strlength);
 
     hr = D3DXGetImageInfoFromFileW(widename, info);
@@ -918,7 +918,7 @@ HRESULT WINAPI D3DXLoadSurfaceFromFileA(LPDIRECT3DSURFACE9 pDestSurface,
     if( !pSrcFile || !pDestSurface ) return D3DERR_INVALIDCALL;
 
     strlength = MultiByteToWideChar(CP_ACP, 0, pSrcFile, -1, NULL, 0);
-    pWidename = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, strlength * sizeof(WCHAR));
+    pWidename = HeapAlloc(GetProcessHeap(), 0, strlength * sizeof(*pWidename));
     MultiByteToWideChar(CP_ACP, 0, pSrcFile, -1, pWidename, strlength);
 
     hr = D3DXLoadSurfaceFromFileW(pDestSurface, pDestPalette, pDestRect, pWidename, pSrcRect, dwFilter, Colorkey, pSrcInfo);
diff --git a/dlls/d3dx9_36/texture.c b/dlls/d3dx9_36/texture.c
index 750025c6d07..c17a3277843 100644
--- a/dlls/d3dx9_36/texture.c
+++ b/dlls/d3dx9_36/texture.c
@@ -746,7 +746,7 @@ HRESULT WINAPI D3DXCreateTextureFromFileExA(LPDIRECT3DDEVICE9 device,
         return D3DERR_INVALIDCALL;
 
     len = MultiByteToWideChar(CP_ACP, 0, srcfile, -1, NULL, 0);
-    widename = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len * sizeof(WCHAR));
+    widename = HeapAlloc(GetProcessHeap(), 0, len * sizeof(*widename));
     MultiByteToWideChar(CP_ACP, 0, srcfile, -1, widename, len);
 
     hr = D3DXCreateTextureFromFileExW(device, widename, width, height, miplevels,