diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c
index 2389218..ec24914 100644
--- a/tests/gsm0808/gsm0808_test.c
+++ b/tests/gsm0808/gsm0808_test.c
@@ -370,7 +370,7 @@
 
 static void test_create_sapi_reject()
 {
-	static const uint8_t res[] = { 0x00, 0x03, 0x25, 0x03, 0x25 };
+	static const uint8_t res[] = { 0x00, 0x06, 0x25, 0x18, 0x03, 0x04, 0x01, 0x25 };
 	struct msgb *msg;
 
 	printf("Testing creating SAPI Reject\n");