diff --git a/src/members-payments.scm b/src/members-payments.scm
index eee3b7e..e6e7e2f 100644
--- a/src/members-payments.scm
+++ b/src/members-payments.scm
@@ -86,9 +86,14 @@
 			  (ci2 (substring-index " " msg))
 			  (vs2 (if ci2
 				   (substring msg 0 ci2)
+				   msg))
+			  (ci3 (substring-index "NULL" msg))
+			  (vs3 (if ci3
+				   (substring msg (+ ci3 4) 4)
 				   msg)))
 		     (or (string->number vs1)
-			 (string->number vs2))))))
+			 (string->number vs2)
+			 (string->number vs3))))))
 	 varsym-id)))
 
  ;; Special comparator (originally with JendaSAP hack)