diff --git a/tests/gsm0408/gsm0408_test.c b/tests/gsm0408/gsm0408_test.c
index 6902e8e25..2d60b8457 100644
--- a/tests/gsm0408/gsm0408_test.c
+++ b/tests/gsm0408/gsm0408_test.c
@@ -422,17 +422,17 @@ static const struct test_mid_encode_decode_test test_mid_encode_decode_tests[] =
 	},
 	{
 		.mi_type = GSM_MI_TYPE_IMEISV,
-		.mi_str = "987654321098765432",
-		.mi_name = "IMEI-SV-987654321098765432",
-		.expect_mi_tlv_hex = "170a937856341290785634f2",
+		.mi_str = "9876543210987654",
+		.mi_name = "IMEI-SV-9876543210987654",
+		.expect_mi_tlv_hex = "17099378563412907856f4",
 	},
 	{
 		.mi_type = GSM_MI_TYPE_IMEISV,
-		.mi_str = "987654321098765432",
-		.mi_name = "IMEI-SV-987654321098765432",
-		.expect_mi_tlv_hex = "170a937856341290785634f2",
-		.str_size = 16,
-		.expect_str = "987654321098765",
+		.mi_str = "9876543210987654",
+		.mi_name = "IMEI-SV-9876543210987654",
+		.expect_mi_tlv_hex = "17099378563412907856f4",
+		.str_size = 17,
+		.expect_str = "9876543210987654",
 	},
 	{
 		/* gsm48 treats TMSI as decimal string */
diff --git a/tests/gsm0408/gsm0408_test.ok b/tests/gsm0408/gsm0408_test.ok
index 8f6630be0..0bd101de7 100644
--- a/tests/gsm0408/gsm0408_test.ok
+++ b/tests/gsm0408/gsm0408_test.ok
@@ -40,14 +40,14 @@ Testing Mobile Identity conversions
   -> MI-TLV-hex='17089a78563412907856'
   -> MI-str="987654321098765" rc=16
   -> MI-name="IMEI-987654321098765"
-- IMEI-SV 987654321098765432
-  -> MI-TLV-hex='170a937856341290785634f2'
-  -> MI-str="987654321098765432" rc=19
-  -> MI-name="IMEI-SV-987654321098765432"
-- IMEI-SV 987654321098765432
-  -> MI-TLV-hex='170a937856341290785634f2'
-  -> MI-str="987654321098765" rc=16
-  -> MI-name="IMEI-SV-987654321098765432"
+- IMEI-SV 9876543210987654
+  -> MI-TLV-hex='17099378563412907856f4'
+  -> MI-str="9876543210987654" rc=17
+  -> MI-name="IMEI-SV-9876543210987654"
+- IMEI-SV 9876543210987654
+  -> MI-TLV-hex='17099378563412907856f4'
+  -> MI-str="9876543210987654" rc=17
+  -> MI-name="IMEI-SV-9876543210987654"
 - TMSI 305419896
   -> MI-TLV-hex='1705f412345678'
   -> MI-str="305419896" rc=9