--- a/src/polkitagent/polkitagentsession.c
+++ b/src/polkitagent/polkitagentsession.c
@@ -596,7 +596,7 @@ polkit_agent_session_initiate (PolkitAge
       goto error;
     }
 
-  helper_argv[0] = PACKAGE_PREFIX "/lib/polkit-1/polkit-agent-helper-1";
+  helper_argv[0] = PACKAGE_PREFIX "/libexec/polkit-1/polkit-agent-helper-1";
   helper_argv[1] = passwd->pw_name;
   helper_argv[2] = NULL;
 
--- a/meson.build
+++ b/meson.build
@@ -28,7 +28,7 @@ pk_sysconfdir = get_option('sysconfdir')
 pk_pkgdatadir = pk_datadir / pk_api_name
 pk_pkgincludedir = pk_includedir / pk_api_name
 # note that this is always 'lib', not lib64 or lib/x86_64-linux-gnu
-pk_libprivdir = 'lib' / pk_api_name
+pk_libprivdir = 'libexec' / pk_api_name
 pk_pkgsysconfdir = pk_sysconfdir / pk_api_name
 
 pk_actiondir = pk_api_name / 'actions'