-(unless (assoc gnorb-bbdb-org-tag-field bbdb-separator-alist)
- (push `(,gnorb-bbdb-org-tag-field ":" ":") bbdb-separator-alist))
+(when (boundp 'bbdb-separator-alist) ;Allow compilation if BBDB is absent!
+ (unless (assoc gnorb-bbdb-org-tag-field bbdb-separator-alist)
+ (push `(,gnorb-bbdb-org-tag-field ":" ":") bbdb-separator-alist)))