diff --git a/scripts/audit-validity-dates.py b/scripts/audit-validity-dates.py
index 623fd2352..5128dc788 100755
--- a/scripts/audit-validity-dates.py
+++ b/scripts/audit-validity-dates.py
@@ -276,7 +276,7 @@ class Auditor:
 
     @staticmethod
     def find_test_dir():
-        """Get the relative path for the MbedTLS test directory."""
+        """Get the relative path for the Mbed TLS test directory."""
         return os.path.relpath(build_tree.guess_mbedtls_root() + '/tests')