diff --git a/include/proto/pattern.h b/include/proto/pattern.h
index e2801a0..63e02e7 100644
--- a/include/proto/pattern.h
+++ b/include/proto/pattern.h
@@ -75,6 +75,20 @@
 
 /*
  *
+ * The following functions search pattern <pattern> into the pattern
+ * expression <expr>. If the pattern is found, delete it. This function
+ * never fails.
+ *
+ */
+void pat_del_list_val(struct pattern_expr *expr, struct pattern *pat);
+void pat_del_tree_ip(struct pattern_expr *expr, struct pattern *pat);
+void pat_del_list_ptr(struct pattern_expr *expr, struct pattern *pat);
+void pat_del_tree_str(struct pattern_expr *expr, struct pattern *pat);
+void pat_del_list_str(struct pattern_expr *expr, struct pattern *pat);
+void pat_del_list_reg(struct pattern_expr *expr, struct pattern *pat);
+
+/*
+ *
  * The following functions are general purpose pattern matching functions.
  *
  */
@@ -162,6 +176,7 @@
 void pattern_prune_expr(struct pattern_expr *expr);
 void pattern_init_expr(struct pattern_expr *expr);
 int pattern_lookup(const char *args, struct pattern_expr *expr, struct pattern_list **pat_elt, struct pattern_tree **idx_elt, char **err);
+int pattern_delete(const char *key, struct pattern_expr *expr, char **err);
 
 
 #endif