diff --git a/tests/crypto/mbedtls_psa/boards/nrf54ls05dk_nrf54ls05b_cpuapp.conf b/tests/crypto/mbedtls_psa/boards/nrf54ls05dk_nrf54ls05b_cpuapp.conf
new file mode 100644
index 000000000000..70c601183ddf
--- /dev/null
+++ b/tests/crypto/mbedtls_psa/boards/nrf54ls05dk_nrf54ls05b_cpuapp.conf
@@ -0,0 +1,6 @@
+#
+# Copyright (c) 2024 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+CONFIG_ENTROPY_GENERATOR=y