diff --git a/src/shared/acl-util.c b/src/shared/acl-util.c
index 7bfe02573a3..c9fdac2cda9 100644
--- a/src/shared/acl-util.c
+++ b/src/shared/acl-util.c
@@ -14,7 +14,7 @@
 
 #if HAVE_ACL
 
-int acl_find_uid(acl_t acl, uid_t uid, acl_entry_t *ret_entry) {
+static int acl_find_uid(acl_t acl, uid_t uid, acl_entry_t *ret_entry) {
         acl_entry_t i;
         int r;
 
diff --git a/src/shared/acl-util.h b/src/shared/acl-util.h
index ef315c2f11d..8dedf2e9423 100644
--- a/src/shared/acl-util.h
+++ b/src/shared/acl-util.h
@@ -14,7 +14,6 @@ int fd_acl_make_writable_fallback(int fd);
 
 #include "macro.h"
 
-int acl_find_uid(acl_t acl, uid_t uid, acl_entry_t *entry);
 int calc_acl_mask_if_needed(acl_t *acl_p);
 int add_base_acls_if_needed(acl_t *acl_p, const char *path);
 int acl_search_groups(const char* path, char ***ret_groups);