diff --git a/scripts/config.pl b/scripts/config.pl
index ba563d6..72aabf6 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -73,6 +73,7 @@
 MBEDTLS_CTR_DRBG_USE_128_BIT_KEY
 MBEDTLS_DEPRECATED_REMOVED
 MBEDTLS_DEPRECATED_WARNING
+MBEDTLS_ECP_NO_INTERNAL_RNG
 MBEDTLS_HAVE_SSE2
 MBEDTLS_MEMORY_BACKTRACE
 MBEDTLS_MEMORY_BUFFER_ALLOC_C