diff --git a/src/engine/objects/Thwomp.h b/src/engine/objects/Thwomp.h
index 22c674bb5..647ef126a 100644
--- a/src/engine/objects/Thwomp.h
+++ b/src/engine/objects/Thwomp.h
@@ -112,6 +112,7 @@ public:
     void func_8007E63C(s32 objectIndex);
 private:
     static size_t _count;
+    static size_t _rand;
     s32 _idx;
     s16 _faceDirection;
     //! @todo Write this better. This effects the squish size and the bounding box size.