diff --git a/LEGO1/mxdirectx/mxdirect3d.cpp b/LEGO1/mxdirectx/mxdirect3d.cpp
index e338046f..0dae36e1 100644
--- a/LEGO1/mxdirectx/mxdirect3d.cpp
+++ b/LEGO1/mxdirectx/mxdirect3d.cpp
@@ -172,7 +172,7 @@ BOOL MxDirect3D::D3DSetMode()
 
 	DDBLTFX ddBltFx = {};
 	ddBltFx.dwSize = sizeof(DDBLTFX);
-	ddBltFx.dwFillColor = 0;
+	ddBltFx.dwFillColor = 0xFF000000;
 
 	if (backBuffer->Blt(NULL, NULL, NULL, DDBLT_WAIT | DDBLT_COLORFILL, &ddBltFx) != DD_OK) {
 		SDL_Log("MxDirect3D::D3DSetMode() color fill failed\n");
diff --git a/LEGO1/mxdirectx/mxdirectdraw.cpp b/LEGO1/mxdirectx/mxdirectdraw.cpp
index 1bec4624..7ccb78c2 100644
--- a/LEGO1/mxdirectx/mxdirectdraw.cpp
+++ b/LEGO1/mxdirectx/mxdirectdraw.cpp
@@ -519,14 +519,12 @@ BOOL MxDirectDraw::DDCreateSurfaces()
 void MxDirectDraw::ClearBackBuffers()
 {
 	HRESULT result;
-	DDBLTFX ddbltfx;
+	DDBLTFX ddbltfx = {};
+	ddbltfx.dwSize = sizeof(DDBLTFX);
+	ddbltfx.dwFillColor = 0xFF000000;
 	int count = m_bFlipSurfaces ? 2 : 1;
 
 	for (int i = 0; i < count; i++) {
-		memset(&ddbltfx, 0, sizeof(ddbltfx));
-		ddbltfx.dwSize = sizeof(ddbltfx);
-		ddbltfx.dwFillColor = 0;
-
 		result = m_pBackBuffer->Blt(NULL, NULL, NULL, DDBLT_COLORFILL | DDBLT_WAIT, &ddbltfx);
 		if (result == DDERR_SURFACELOST) {
 			m_pBackBuffer->Restore();
diff --git a/LEGO1/omni/src/video/mxdisplaysurface.cpp b/LEGO1/omni/src/video/mxdisplaysurface.cpp
index 8d137e34..d38cb093 100644
--- a/LEGO1/omni/src/video/mxdisplaysurface.cpp
+++ b/LEGO1/omni/src/video/mxdisplaysurface.cpp
@@ -72,7 +72,7 @@ void MxDisplaySurface::ClearScreen()
 
 	DDBLTFX ddBltFx = {};
 	ddBltFx.dwSize = sizeof(DDBLTFX);
-	ddBltFx.dwFillColor = 0;
+	ddBltFx.dwFillColor = 0xFF000000;
 
 	for (MxS32 i = 0; i < backBuffers; i++) {
 		if (m_ddSurface2->Blt(NULL, NULL, NULL, DDBLT_COLORFILL | DDBLT_WAIT, &ddBltFx) == DDERR_SURFACELOST) {
@@ -779,21 +779,11 @@ void MxDisplaySurface::Display(MxS32 p_left, MxS32 p_top, MxS32 p_left2, MxS32 p
 			if (g_unk0x1010215c < 2) {
 				g_unk0x1010215c++;
 
-				DDSURFACEDESC ddsd;
-				memset(&ddsd, 0, sizeof(ddsd));
-				ddsd.dwSize = sizeof(ddsd);
-				if (m_ddSurface2->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_WRITEONLY, NULL) == DD_OK) {
-					MxU8* surface = (MxU8*) ddsd.lpSurface;
-					MxS32 height = m_videoParam.GetRect().GetHeight();
+				DDBLTFX ddbltfx = {};
+				ddbltfx.dwSize = sizeof(ddbltfx);
+				ddbltfx.dwFillColor = 0xFF000000;
 
-					for (MxU32 i = 0; i < ddsd.dwHeight; i++) {
-						memset(surface, 0, ddsd.lPitch);
-						surface += ddsd.lPitch;
-					}
-
-					m_ddSurface2->Unlock(ddsd.lpSurface);
-				}
-				else {
+				if (m_ddSurface2->Blt(NULL, NULL, NULL, DDBLT_COLORFILL | DDBLT_WAIT, &ddbltfx) != DD_OK) {
 					SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "MxDisplaySurface::Display error\n");
 				}
 			}
@@ -812,7 +802,7 @@ void MxDisplaySurface::Display(MxS32 p_left, MxS32 p_top, MxS32 p_left2, MxS32 p
 			DDBLTFX data;
 			memset(&data, 0, sizeof(data));
 			data.dwSize = sizeof(data);
-			data.dwDDFX = 8;
+			data.dwDDFX = DDBLTFX_NOTEARING;
 
 			if (m_ddSurface1->Blt((LPRECT) &b, m_ddSurface2, (LPRECT) &a, DDBLT_NONE, &data) == DDERR_SURFACELOST) {
 				m_ddSurface1->Restore();
diff --git a/miniwin/include/miniwin/ddraw.h b/miniwin/include/miniwin/ddraw.h
index 1e3fd17f..2a8932a2 100644
--- a/miniwin/include/miniwin/ddraw.h
+++ b/miniwin/include/miniwin/ddraw.h
@@ -246,9 +246,13 @@ struct DDSCAPS {
 };
 typedef struct DDSCAPS* LPDDSCAPS;
 
+#define DDBLTFX_NOTEARING DDBLTFXFlags::NOTEARING
+enum class DDBLTFXFlags : uint8_t {
+	NOTEARING = 1 << 3,
+};
 struct DDBLTFX {
 	DWORD dwSize;
-	DWORD dwDDFX;
+	DDBLTFXFlags dwDDFX;
 	DWORD dwROP;
 	DWORD dwFillColor;
 };