diff --git a/tools/quake3/common/polylib.c b/tools/quake3/common/polylib.c
index 839f7ea5..83cc9ed9 100644
--- a/tools/quake3/common/polylib.c
+++ b/tools/quake3/common/polylib.c
@@ -253,13 +253,9 @@ winding_t *BaseWindingForPlane (vec3_t normal, vec_t dist)
 			vright[2] = normal[1];
 			break;
 	}
-	CrossProduct(normal, vright, vup);
-
-	// IMPORTANT NOTE: vright and vup are NOT unit vectors at this point.
-	// However, normal, vup, and vright are pairwise perpendicular.
-
-	VectorSetLength(vup, MAX_WORLD_COORD * 2, vup);
+	// NOTE: vright is NOT a unit vector at this point.
 	VectorSetLength(vright, MAX_WORLD_COORD * 2, vright);
+	CrossProduct(normal, vright, vup);
 	VectorScale(normal, dist, org);
 
 	w = AllocWinding(4);