diff --git a/include/types/acl.h b/include/types/acl.h
index bf5537f..2b0de0c 100644
--- a/include/types/acl.h
+++ b/include/types/acl.h
@@ -213,7 +213,7 @@
 	union {
 		void *ptr;              /* any data */
 		char *str;              /* any string  */
-		regex_t *reg;           /* a compiled regex */
+		regex *reg;             /* a compiled regex */
 	} ptr;                          /* indirect values, allocated */
 	void(*freeptrbuf)(void *ptr);	/* a destructor able to free objects from the ptr */
 	int len;                        /* data length when required  */