--- spam.el.orig        Tue Jan  7 11:41:17 2003
+++ spam.el     Tue Jan  7 11:41:22 2003
@@ -522,7 +522,7 @@
        (if (not (eobp))
            (setq category (buffer-substring (point) (spam-point-at-eol))))
        (when (not (zerop (length category))) ; we need a category here
-         (if spam-ifile-all-categories
+         (if (not spam-ifile-all-categories)
              (when (string-equal spam-ifile-spam-category category)
                (setq return spam-split-group))
            (setq return category)))))  ; always accept the ifile category