diff --git a/openbsc/src/libmsc/db.c b/openbsc/src/libmsc/db.c
index a7eeda4..790cde3 100644
--- a/openbsc/src/libmsc/db.c
+++ b/openbsc/src/libmsc/db.c
@@ -369,7 +369,7 @@
 	ainfo->a3a8_ki_len = dbi_result_get_field_length(result, "a3a8_ki");
 	a3a8_ki = dbi_result_get_binary(result, "a3a8_ki");
 	if (ainfo->a3a8_ki_len > sizeof(ainfo->a3a8_ki))
-		ainfo->a3a8_ki_len = sizeof(ainfo->a3a8_ki_len);
+		ainfo->a3a8_ki_len = sizeof(ainfo->a3a8_ki);
 	memcpy(ainfo->a3a8_ki, a3a8_ki, ainfo->a3a8_ki_len);
 
 	dbi_result_free(result);