diff --git a/src/Generating/Prefab.h b/src/Generating/Prefab.h
index 45af4b282..c62a68f97 100644
--- a/src/Generating/Prefab.h
+++ b/src/Generating/Prefab.h
@@ -146,6 +146,9 @@ public:
 	/** Sets the flag whether the lowest layer of the prefab should be repeated downwards until it hits a solid block. */
 	void SetExtendFloor(bool a_ShouldExtendFloor) { m_ShouldExtendFloor = a_ShouldExtendFloor; }
 
+	/** Sets the internal hitbox to the specified value. */
+	void SetHitBox(const cCuboid & a_HitBox) { m_HitBox = a_HitBox; }
+
 protected:
 	/** Packs complete definition of a single block, for per-letter assignment. */
 	struct sBlockTypeDef
diff --git a/src/Generating/PrefabPiecePool.cpp b/src/Generating/PrefabPiecePool.cpp
index e2273aed3..8431500ce 100644
--- a/src/Generating/PrefabPiecePool.cpp
+++ b/src/Generating/PrefabPiecePool.cpp
@@ -287,6 +287,7 @@ bool cPrefabPiecePool::LoadCubesetPieceVer1(const AString & a_FileName, cLuaStat
 	{
 		return false;
 	}
+	prefab->SetHitBox(Hitbox);
 
 	// Read the connectors
 	if (!ReadConnectorsCubesetVer1(a_FileName, a_LuaState, PieceName, prefab.get(), a_LogWarnings))