diff --git a/tests/net/lib/lwm2m/interop/boards/native_sim.conf b/tests/net/lib/lwm2m/interop/boards/native_sim.conf
index 2dc86f3d484..99b234c8e66 100644
--- a/tests/net/lib/lwm2m/interop/boards/native_sim.conf
+++ b/tests/net/lib/lwm2m/interop/boards/native_sim.conf
@@ -6,3 +6,4 @@ CONFIG_NET_CONFIG_MY_IPV4_GW="192.0.2.2"
 CONFIG_NATIVE_SIM_SLOWDOWN_TO_REAL_TIME=y
 CONFIG_NATIVE_UART_0_ON_STDINOUT=y
 CONFIG_ASAN=y
+CONFIG_NATIVE_EXTRA_CMDLINE_ARGS="--seed-random"
diff --git a/tests/net/lib/lwm2m/interop/src/lwm2m-client.c b/tests/net/lib/lwm2m/interop/src/lwm2m-client.c
index a150f1b41cb..cb4ab22acd2 100644
--- a/tests/net/lib/lwm2m/interop/src/lwm2m-client.c
+++ b/tests/net/lib/lwm2m/interop/src/lwm2m-client.c
@@ -224,10 +224,6 @@ int main(void)
 {
 	int ret;
 
-#if defined(CONFIG_BOARD_NATIVE_POSIX)
-	srandom(time(NULL));
-#endif
-
 	ret = lwm2m_setup();
 	if (ret < 0) {
 		LOG_ERR("Cannot setup LWM2M fields (%d)", ret);