diff --git a/src/frontends/osx/README.md b/src/frontends/osx/README.md
index 9dfdeb224..9ddd7228a 100644
--- a/src/frontends/osx/README.md
+++ b/src/frontends/osx/README.md
@@ -30,7 +30,7 @@ a monolithic and static build. This can be achieved on OS X by using:
         --disable-defaults \
         --enable-openssl --enable-kernel-libipsec --enable-kernel-pfroute \
         --enable-eap-mschapv2 --enable-eap-identity --enable-eap-md5 \
-        --enable-pkcs1 --enable-socket-default --enable-osx-attr \
+        --enable-eap-gtc --enable-pkcs1 --enable-socket-default --enable-osx-attr \
         --enable-xauth-generic --enable-gcm --enable-ccm --enable-ctr \
         --enable-keychain --enable-nonce --enable-charon \
         --enable-ikev1 --enable-ikev2