diff --git a/src/win-d3d-fs.cc b/src/win-d3d-fs.cc
index c3ca8d1..9c13008 100644
--- a/src/win-d3d-fs.cc
+++ b/src/win-d3d-fs.cc
@@ -306,6 +306,9 @@ static void d3d_fs_blit_memtoscreen(int x, int y, int y1, int y2, int w, int h)
         int yy;
         double l, t, r, b;
 
+	if (y1 == y2)
+		return; /*Nothing to do*/
+
         d3d_verts[0].tu = d3d_verts[2].tu = d3d_verts[3].tu = 0;
         d3d_verts[0].tv = d3d_verts[3].tv = d3d_verts[4].tv = 0;
         d3d_verts[1].tu = d3d_verts[4].tu = d3d_verts[5].tu = (float)w / 2048.0;
@@ -396,6 +399,9 @@ static void d3d_fs_blit_memtoscreen_8(int x, int y, int w, int h)
         int xx, yy;
         double l, t, r, b;
 
+	if (!h)
+		return; /*Nothing to do*/
+
         d3d_verts[0].tu = d3d_verts[2].tu = d3d_verts[3].tu = 0;
         d3d_verts[0].tv = d3d_verts[3].tv = d3d_verts[4].tv = 0;
         d3d_verts[1].tu = d3d_verts[4].tu = d3d_verts[5].tu = (float)w / 2048.0;
diff --git a/src/win-d3d.cc b/src/win-d3d.cc
index a1e92ea..d239c2c 100644
--- a/src/win-d3d.cc
+++ b/src/win-d3d.cc
@@ -232,6 +232,9 @@ void d3d_blit_memtoscreen(int x, int y, int y1, int y2, int w, int h)
         uint32_t *p, *src;
         int yy;
         
+        if (y1 == y2)
+        	return; /*Nothing to do*/
+
         d3d_verts[0].tu = d3d_verts[2].tu = d3d_verts[3].tu = 0;//0.5 / 2048.0;
         d3d_verts[0].tv = d3d_verts[3].tv = d3d_verts[4].tv = 0;//0.5 / 2048.0;
         d3d_verts[1].tu = d3d_verts[4].tu = d3d_verts[5].tu = (float)w / 2048.0;
@@ -306,6 +309,9 @@ void d3d_blit_memtoscreen_8(int x, int y, int w, int h)
         int yy, xx;
         HRESULT hr = D3D_OK;
 
+	if (h == 0)
+		return; /*Nothing to do*/
+
         d3d_verts[0].tu = d3d_verts[2].tu = d3d_verts[3].tu = 0;//0.5 / 2048.0;
         d3d_verts[0].tv = d3d_verts[3].tv = d3d_verts[4].tv = 0;//0.5 / 2048.0;
         d3d_verts[1].tu = d3d_verts[4].tu = d3d_verts[5].tu = (float)w / 2048.0;