diff --git a/tests/scripts/check_names.py b/tests/scripts/check_names.py
index 8c08e5c..96a1d3c 100755
--- a/tests/scripts/check_names.py
+++ b/tests/scripts/check_names.py
@@ -930,7 +930,7 @@
             "This script confirms that the naming of all symbols and identifiers "
             "in Mbed TLS are consistent with the house style and are also "
             "self-consistent.\n\n"
-            "Expected to be run from the MbedTLS root directory.")
+            "Expected to be run from the Mbed TLS root directory.")
     )
     parser.add_argument(
         "-v", "--verbose",
diff --git a/tests/src/external_timing/timing_alt.h b/tests/src/external_timing/timing_alt.h
index 82e8c8b..d71ceb9 100644
--- a/tests/src/external_timing/timing_alt.h
+++ b/tests/src/external_timing/timing_alt.h
@@ -1,5 +1,5 @@
 /*
- * Copy of the internal MbedTLS timing implementation, to be used in tests.
+ * Copy of the internal Mbed TLS timing implementation, to be used in tests.
  */
 /*
  *  Copyright The Mbed TLS Contributors