diff --git a/Makefile b/Makefile
index 9b9b8bd..12b46d4 100644
--- a/Makefile
+++ b/Makefile
@@ -8,9 +8,12 @@ install:
 
 clean:
 	rm -rf dist
-	rm -rf build
+	rm -rf build/*
 	rm -rf __pycache__
 	rm -rf spintrum.egg-info
 	rm -rf spintrum/lib
 	rm -rf spintrum/*.pyc
 	rm -rf spintrum/__pycache__
+	rm -rf CMakeCache.txt
+	rm -rf CMakeFiles
+	rm -rf cmake_install.cmake