diff --git a/configure.ac b/configure.ac
index 27184b1d6..d373d1d16 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1843,6 +1843,14 @@ then
         AM_CFLAGS="$AM_CFLAGS -DHAVE_CRL"
         AM_CONDITIONAL([BUILD_CRL], [test "x$ENABLED_CRL" = "xyes"])
     fi
+
+    # Requires tlsx, make sure on
+    if test "x$ENABLED_TLSX" = "xno"
+    then
+        ENABLED_TLSX="yes"
+        AM_CFLAGS="$AM_CFLAGS -DHAVE_TLS_EXTENSIONS -DHAVE_SNI -DHAVE_MAX_FRAGMENT -DHAVE_TRUNCATED_HMAC -DHAVE_SUPPORTED_CURVES"
+    fi
+
     AM_CFLAGS="$AM_CFLAGS -DHAVE_STUNNEL -DWOLFSSL_ALWAYS_VERIFY_CB"
     AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_ALWAYS_KEEP_SNI"
 fi