diff --git a/scripts/config.pl b/scripts/config.pl
index ff522b6..2519623 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -53,6 +53,7 @@
 #   MBEDTLS_NO_64BIT_MULTIPLICATION
 #   MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH
 #   MBEDTLS_AES_ONLY_ENCRYPT
+#   MBEDTLS_AES_SCA_COUNTERMEASURES
 #   and any symbol beginning _ALT
 #
 
@@ -130,6 +131,7 @@
 MBEDTLS_USE_TINYCRYPT
 MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH
 MBEDTLS_AES_ONLY_ENCRYPT
+MBEDTLS_AES_SCA_COUNTERMEASURES
 _ALT\s*$
 );