diff --git a/cryptochip-get-random/main.c b/cryptochip-get-random/main.c
index c3e30c9..52b2857 100644
--- a/cryptochip-get-random/main.c
+++ b/cryptochip-get-random/main.c
@@ -22,9 +22,19 @@
 int main(void)
 {
 	uint8_t random_number[32];
+	bool is_locked = false;
 
 	atcab_init(&cfg_ateccx08a_i2c_default);
 
+	/* Check if config zone is locked */
+	atcab_is_locked(LOCK_ZONE_CONFIG, &is_locked);
+	if (!is_locked) {
+		printf("**WARNING**: the cryptochip is currently not configured. Run "
+		       "ecc-test-main at least once to be able to run this example.\n");
+		atcab_release();
+		return 1;
+	}
+
 	while (true) {	
 		atcab_random(random_number);
 		write(STDOUT_FILENO, random_number, sizeof(random_number));