diff --git a/tests/gsm0408/gsm0408_test.ok b/tests/gsm0408/gsm0408_test.ok
index 6e99f5b..d6579e5 100644
--- a/tests/gsm0408/gsm0408_test.ok
+++ b/tests/gsm0408/gsm0408_test.ok
@@ -72,8 +72,8 @@
     returned empty string
 - MI type: TMSI
   - writing to zero-length string:
-    rc=1
-    ERROR: Wrote to invalid memory!
+    rc=0
+    nothing written
   - writing to 1-byte-length string:
     rc=1
     returned empty string
@@ -82,8 +82,8 @@
     returned empty string
 - MI type: NONE
   - writing to zero-length string:
-    rc=1
-    ERROR: Wrote to invalid memory!
+    rc=0
+    nothing written
   - writing to 1-byte-length string:
     rc=1
     returned empty string
@@ -102,8 +102,8 @@
     returned empty string
 - MI type: TMSI | GSM_MI_ODD
   - writing to zero-length string:
-    rc=1
-    ERROR: Wrote to invalid memory!
+    rc=0
+    nothing written
   - writing to 1-byte-length string:
     rc=1
     returned empty string
@@ -112,8 +112,8 @@
     returned empty string
 - MI type: NONE | GSM_MI_ODD
   - writing to zero-length string:
-    rc=1
-    ERROR: Wrote to invalid memory!
+    rc=0
+    nothing written
   - writing to 1-byte-length string:
     rc=1
     returned empty string