diff --git a/tests/scripts/doxygen.sh b/tests/scripts/doxygen.sh
index 2bc8dc9..cb87829 100755
--- a/tests/scripts/doxygen.sh
+++ b/tests/scripts/doxygen.sh
@@ -21,7 +21,7 @@
 set -eu
 
 if [ -d library -a -d include -a -d tests ]; then :; else
-    echo "Must be run from mbed TLS root" >&2
+    echo "Must be run from Mbed TLS root" >&2
     exit 1
 fi