diff --git a/include/qbsp/brush.hh b/include/qbsp/brush.hh
index 39de1f11..9ecf1a56 100644
--- a/include/qbsp/brush.hh
+++ b/include/qbsp/brush.hh
@@ -50,6 +50,6 @@ bool PlaneInvEqual(const qbsp_plane_t *p1, const qbsp_plane_t *p2);
 
 bool BoundBrush (brush_t *brush);
 vec_t BrushVolume (const brush_t *brush);
-int BrushMostlyOnSide (const brush_t *brush, const plane_t *plane);
+int BrushMostlyOnSide (const brush_t *brush, const vec3_t normal, vec_t dist);
 
 #endif
diff --git a/qbsp/brush.cc b/qbsp/brush.cc
index 46ff4beb..c0b1078b 100644
--- a/qbsp/brush.cc
+++ b/qbsp/brush.cc
@@ -1282,7 +1282,7 @@ BrushMostlyOnSide
 from q3map
 ==================
 */
-int BrushMostlyOnSide (const brush_t *brush, const plane_t *plane)
+int BrushMostlyOnSide (const brush_t *brush, const vec3_t planenormal, vec_t planedist)
 {
     vec_t max;
     int side;
@@ -1296,7 +1296,7 @@ int BrushMostlyOnSide (const brush_t *brush, const plane_t *plane)
             continue;
         
         for (int j=0 ; j<w->numpoints ; j++) {
-            const vec_t d = DotProduct (w->points[j], plane->normal) - plane->dist;
+            const vec_t d = DotProduct (w->points[j], planenormal) - planedist;
             if (d > max) {
                 max = d;
                 side = SIDE_FRONT;
diff --git a/qbsp/test_qbsp.cc b/qbsp/test_qbsp.cc
index c9bf3044..071fb158 100644
--- a/qbsp/test_qbsp.cc
+++ b/qbsp/test_qbsp.cc
@@ -156,11 +156,10 @@ TEST(qbsp, BrushVolume) {
 TEST(qbsp, BrushMostlyOnSide1) {
     brush_t *brush = load128x128x32Brush();
     
-    plane_t plane1;
-    VectorSet(plane1.normal, -1, 0, 0);
-    plane1.dist = -100;
+    vec3_t plane1normal = { -1, 0, 0 };
+    vec_t plane1dist = -100;
     
-    EXPECT_EQ(SIDE_FRONT, BrushMostlyOnSide(brush, &plane1));
+    EXPECT_EQ(SIDE_FRONT, BrushMostlyOnSide(brush, plane1normal, plane1dist));
     
     FreeMem(brush, BRUSH, 1);
 }
@@ -168,11 +167,10 @@ TEST(qbsp, BrushMostlyOnSide1) {
 TEST(qbsp, BrushMostlyOnSide2) {
     brush_t *brush = load128x128x32Brush();
     
-    plane_t plane2;
-    VectorSet(plane2.normal, 1, 0, 0);
-    plane2.dist = 100;
+    vec3_t plane1normal = { 1, 0, 0 };
+    vec_t plane1dist = 100;
     
-    EXPECT_EQ(SIDE_BACK, BrushMostlyOnSide(brush, &plane2));
+    EXPECT_EQ(SIDE_BACK, BrushMostlyOnSide(brush, plane1normal, plane1dist));
     
     FreeMem(brush, BRUSH, 1);
 }