diff --git a/tests/test_climat2.py b/tests/test_climat2.py
index cede642..2d5ad77 100644
--- a/tests/test_climat2.py
+++ b/tests/test_climat2.py
@@ -10,12 +10,7 @@ import glob
 from libmat2 import images, parser_factory
 
 
-mat2_binary = ['./mat2']
-
-if 'MAT2_GLOBAL_PATH_TESTSUITE' in os.environ:
-    # Debian runs tests after installing the package
-    # https://0xacab.org/jvoisin/mat2/issues/16#note_153878
-    mat2_binary = ['/usr/bin/env', 'mat2']
+mat2_binary = [os.environ['out'] + '/bin/mat2']
 
 
 class TestHelp(unittest.TestCase):