diff --git a/scripts/config.pl b/scripts/config.pl
index dd80989..fed235c 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -31,7 +31,6 @@
 #   MBEDTLS_REMOVE_3DES_CIPHERSUITES
 #   MBEDTLS_SSL_HW_RECORD_ACCEL
 #   MBEDTLS_RSA_NO_CRT
-#   MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
 #   MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
 #       - this could be enabled if the respective tests were adapted
 #   MBEDTLS_ZLIB_SUPPORT
@@ -93,7 +92,6 @@
 MBEDTLS_REMOVE_ARC4_CIPHERSUITES
 MBEDTLS_REMOVE_3DES_CIPHERSUITES
 MBEDTLS_SSL_HW_RECORD_ACCEL
-MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
 MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
 MBEDTLS_ZLIB_SUPPORT
 MBEDTLS_PKCS11_C