diff --git a/algoim/organizer/primitive.hpp b/algoim/organizer/primitive.hpp
index 896163f..0ebea9f 100644
--- a/algoim/organizer/primitive.hpp
+++ b/algoim/organizer/primitive.hpp
@@ -786,6 +786,16 @@ void makeHalfPlane(const HalfPlaneDesc& halfPlaneDesc, VisiblePrimitiveRep& visi
     tensor.m(uvector3(1, 0, 0)) = halfPlaneDesc.normal(0);
     tensor.m(uvector3(0, 1, 0)) = halfPlaneDesc.normal(1);
     tensor.m(uvector3(0, 0, 1)) = halfPlaneDesc.normal(2);
+    // AABB
+    visiblePrimitive.aabb.min   = -std::numeric_limits<real>::max();
+    visiblePrimitive.aabb.max   = std::numeric_limits<real>::max();
+    for (int dim = 0; dim < 3; ++dim) {
+        if (halfPlaneDesc.normal(dim) == 1) {
+            visiblePrimitive.aabb.max(dim) = halfPlaneDesc.basePt(dim);
+        } else if (halfPlaneDesc.normal(dim) == -1) {
+            visiblePrimitive.aabb.min(dim) = halfPlaneDesc.basePt(dim);
+        }
+    }
     // subBlobTree
     visiblePrimitive.subBlobTree.clear();
     buildNearBalancedBlobTree(visiblePrimitive.subBlobTree, 1);