diff --git a/tools/mbspc/mbspc/l_bsp_q3.c b/tools/mbspc/mbspc/l_bsp_q3.c
index a5c65245..11b70960 100644
--- a/tools/mbspc/mbspc/l_bsp_q3.c
+++ b/tools/mbspc/mbspc/l_bsp_q3.c
@@ -217,7 +217,7 @@ void Q3_SurfacePlane(q3_dsurface_t *surface, vec3_t normal, float *dist)
 */
 	if (VectorLength(normal) < 0.9)
 	{
-		printf("surface %d bogus normal vector %f %f %f\n", surface - q3_drawSurfaces, normal[0], normal[1], normal[2]);
+		printf("surface %td bogus normal vector %f %f %f\n", surface - q3_drawSurfaces, normal[0], normal[1], normal[2]);
 		printf("t1 = %f %f %f, t2 = %f %f %f\n", t1[0], t1[1], t1[2], t2[0], t2[1], t2[2]);
 		for (i = 0; i < surface->numVerts; i++)
 		{