diff --git a/src/brmember.scm b/src/brmember.scm
index 307a93f..ec3f5b4 100644
--- a/src/brmember.scm
+++ b/src/brmember.scm
@@ -54,6 +54,7 @@
   brmember-usable?
   brmember-in-dokuwiki?
   brmember-has-problems?
+  brmember-file-has-problems?
 
   brmember-destroyed?
   brmember-suspended?
@@ -284,7 +285,7 @@
 	       (equal? email memail))
 	     #f))))
 
- ;; True if member record is OK
+ ;; True if member record is not OK
  (define (brmember-has-problems? mr)
    (or (member-has-errors? mr)
        (not (null? (brmember-missing-keys mr)))
@@ -296,6 +297,14 @@
 	    (not (brmember-dokuwiki-email-ok? mr)))
        ))
 
+ ;; True if member record is not OK
+ (define (brmember-file-has-problems? mr)
+   (or (member-has-errors? mr)
+       (not (null? (brmember-missing-keys mr)))
+       (not (brmember-usable? mr))
+       (not (is-4digit-prime? (brmember-id mr)))
+       ))
+
  ;; Returns true if the member record represents non-existing
  ;; member. The *current-month* is a global parameter from period
  ;; module.
diff --git a/src/members-print.scm b/src/members-print.scm
index bee75f3..5e49d5a 100644
--- a/src/members-print.scm
+++ b/src/members-print.scm
@@ -366,7 +366,7 @@
 		  ...
 		  ((#:right light) ... none))
        #:ansi-reset? #t)))
-   (let ((pmrs (find-members-by-predicate mb brmember-has-problems?)))
+   (let ((pmrs (find-members-by-predicate mb brmember-file-has-problems?)))
      (when (not (null? pmrs))
        (newline)
        (print "Member files with errors (" (length pmrs) "): "
@@ -375,7 +375,7 @@
 	       ", "))))
    (let ((pmrs (find-members-by-predicate mb (lambda (mr)
 					       (and (brmember-has-highlights? mr)
-						    (not (brmember-has-problems? mr)))))))
+						    (not (brmember-file-has-problems? mr)))))))
      (when (not (null? pmrs))
        (newline)
        (print "Member files with issues: "