diff --git a/include/proto/pattern.h b/include/proto/pattern.h
index 9c93db9..5b99296 100644
--- a/include/proto/pattern.h
+++ b/include/proto/pattern.h
@@ -209,7 +209,7 @@
 void pattern_init_expr(struct pattern_expr *expr);
 struct pattern_expr *pattern_lookup_expr(struct pattern_head *head, struct pat_ref *ref);
 struct pattern_expr *pattern_new_expr(struct pattern_head *head, struct pat_ref *ref,
-                                      char **err, int *reuse);
+                                      int patflags, char **err, int *reuse);
 struct sample_data **pattern_find_smp(struct pattern_expr *expr, struct pat_ref_elt *elt);
 int pattern_delete(struct pattern_expr *expr, struct pat_ref_elt *ref);