diff --git a/Makefile b/Makefile
index e16fdb4..13f9d0e 100644
--- a/Makefile
+++ b/Makefile
@@ -125,6 +125,7 @@ clean:
 	$(MAKE) -C wfobj clean
 	$(MAKE) -C TextureCache clean
 	$(MAKE) -C OdeWorld clean
+	$(MAKE) -C PhyObj clean
 
 distclean: clean
 	-rm -rf dist