diff --git a/bbstool.scm b/bbstool.scm
index aca3c99..3989022 100644
--- a/bbstool.scm
+++ b/bbstool.scm
@@ -161,8 +161,9 @@ CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   ((problems)
    (let loop ((mb MB))
      (when (not (null? mb))
-       (when (member-highlights? (car mb))
+       (when (not (member-valid? (car mb)))
 	 (newline)
+	 (print-member-table (car mb))
 	 (print-member-source (car mb)))
        (loop (cdr mb)))))
   )
diff --git a/member-record.scm b/member-record.scm
index 92bcb87..50a1352 100644
--- a/member-record.scm
+++ b/member-record.scm
@@ -44,6 +44,7 @@
   member-record-info
   member-missing-keys
   member-highlights?
+  member-valid?
 
   member-destroyed?
   member-suspended?
@@ -72,7 +73,8 @@
 	 testing
 	 month
 	 period
-	 configuration)
+	 configuration
+	 primes)
 
  ;; Checks whether given string is a 4-digit decimal number.
  (define (is-4digit-string? s)
@@ -199,6 +201,11 @@
  (define (member-highlights? mr)
    (dict-has-key? mr 'highlights))
 
+ ;; True if member record is OK
+ (define (member-valid? mr)
+   (and (not (member-highlights? mr))
+	(is-4digit-prime? (member-id mr))))
+
  ;; Returns true if the member record represents destroyed member. The
  ;; *current-month* is a global parameter from period module.
  (define (member-destroyed? mr)