diff --git a/Makefile b/Makefile
index 0e6f65d..e3bb9fb 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ shaders:
 	dot -Tpng $< -o $@
 
 %.glb: %.glb.gz
-	gunzip $<
+	gunzip -k $<
 
 build: basicmesh.glb 
 	meson compile -j 10 -C $(ROOT_DIR)/builddir
@@ -56,6 +56,7 @@ debug_run: build
 
 clean:
 	meson compile --clean -C builddir
+	rm -f basicmesh.glb
 
 debug_test: build
 	gdb --nx -x .gdbinit --ex run --ex bt --ex q --args builddir/runtests -e "[pathing]"
diff --git a/basicmesh.glb.gz b/basicmesh.glb.gz
index 5898895..5082934 100644
Binary files a/basicmesh.glb.gz and b/basicmesh.glb.gz differ