diff --git a/scripts/config.py b/scripts/config.py
index e5182a6..8d2ed10 100755
--- a/scripts/config.py
+++ b/scripts/config.py
@@ -89,6 +89,7 @@
     'MBEDTLS_NO_64BIT_MULTIPLICATION', # influences anything that uses bignum
     'MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES', # removes a feature
     'MBEDTLS_NO_UDBL_DIVISION', # influences anything that uses bignum
+    'MBEDTLS_PSA_DRIVER_GET_ENTROPY', # incompatible with MBEDTLS_PSA_BUILTIN_GET_ENTROPY
     'MBEDTLS_PSA_P256M_DRIVER_ENABLED', # influences SECP256R1 KeyGen/ECDH/ECDSA
     'MBEDTLS_PLATFORM_NO_STD_FUNCTIONS', # removes a feature
     'MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS', # removes a feature