diff --git a/libpkgconf/path.c b/libpkgconf/path.c
index 5884ed7..e591298 100644
--- a/libpkgconf/path.c
+++ b/libpkgconf/path.c
@@ -268,6 +268,8 @@ pkgconf_path_free(pkgconf_list_t *dirlist)
 		free(pnode->path);
 		free(pnode);
 	}
+
+	pkgconf_list_zero(dirlist);
 }
 
 static char *
diff --git a/libpkgconf/tuple.c b/libpkgconf/tuple.c
index 2d550d8..0199709 100644
--- a/libpkgconf/tuple.c
+++ b/libpkgconf/tuple.c
@@ -390,4 +390,6 @@ pkgconf_tuple_free(pkgconf_list_t *list)
 
 	PKGCONF_FOREACH_LIST_ENTRY_SAFE(list->head, next, node)
 		pkgconf_tuple_free_entry(node->data, list);
+
+	pkgconf_list_zero(list);
 }