diff --git a/tests/FILEFORMAT.md b/tests/FILEFORMAT.md
index be111678e2..e9248826ef 100644
--- a/tests/FILEFORMAT.md
+++ b/tests/FILEFORMAT.md
@@ -423,6 +423,7 @@ Features testable here are:
 - `oldlibssh` (versions before 0.9.4)
 - `libz`
 - `manual`
+- `mbedtls`
 - `Mime`
 - `netrc`
 - `NSS`
diff --git a/tests/runtests.pl b/tests/runtests.pl
index 33caf7c5cd..0547d3a46e 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -3015,6 +3015,7 @@ sub setupfeatures {
     $feature{"manual"} = $has_manual;
     $feature{"MinGW"} = $has_mingw;
     $feature{"MultiSSL"} = $has_multissl;
+    $feature{"mbedtls"} = $has_mbedtls;
     $feature{"NSS"} = $has_nss;
     $feature{"NTLM"} = $has_ntlm;
     $feature{"NTLM_WB"} = $has_ntlm_wb;