diff --git a/cmds/installd/utils.h b/cmds/installd/utils.h
index ead73fe..e084781 100644
--- a/cmds/installd/utils.h
+++ b/cmds/installd/utils.h
@@ -102,7 +102,8 @@
                      const char* leaf,
                      userid_t userid);
 
-int is_valid_package_name(const char* pkgname);
+bool is_valid_filename(const std::string& name);
+bool is_valid_package_name(const std::string& packageName);
 
 int delete_dir_contents(const std::string& pathname, bool ignore_if_missing = false);
 int delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing = false);