diff --git a/libisofs/libisofs.h b/libisofs/libisofs.h
index 2cbc37f..20ecac2 100644
--- a/libisofs/libisofs.h
+++ b/libisofs/libisofs.h
@@ -2537,7 +2537,7 @@ int iso_obtain_msgs(char *minimum_severity, int *error_code, int *imgid,
     @param os_errno   Eventual errno related to the message. Submit 0 if
                       the message is not related to a operating system error.
     @param severity   One of "ABORT", "FATAL", "FAILURE", "SORRY", "WARNING",
-                      "HINT", "NOTE", "UPDATE", "DEBUG". Defaults to "FATAL".
+                      "HINT", "NOTE", "UPDATE", "DEBUG". Defaults to "ALL".
     @param origin     Submit 0 for now.
     @return           1 if message was delivered, <=0 if failure