diff --git a/pystencils_tests/test_version_string.py b/pystencils_tests/test_version_string.py
index 541ba35e2435f03b2ef9ef17054de2aa14c172fa..b1c0b28fc823475ee45b605d96a61421b8ad5dfb 100644
--- a/pystencils_tests/test_version_string.py
+++ b/pystencils_tests/test_version_string.py
@@ -9,4 +9,4 @@ def test_version_string():
             version = f.read()
         assert ps.__version__ == version
     else:
-        ps.__version__ == "development"
+        assert ps.__version__ == "development"