diff --git a/test/test_compile_lib.py b/test/test_compile_lib.py
index 11a2666c..7151975e 100644
--- a/test/test_compile_lib.py
+++ b/test/test_compile_lib.py
@@ -14,6 +14,7 @@ def test_compile_lib():
 
 
 def check_compile_lib(implementation):
+    helpers.make('clean', working_dir=implementation.path())
     helpers.make(working_dir=implementation.path())