Index: meson.build
--- meson.build.orig
+++ meson.build
@@ -115,7 +115,7 @@ desktopdir = join_paths(datadir, meson.project_name(),
 helpdir = join_paths(prefix, gq_helpdir)
 htmldir = join_paths(prefix, gq_htmldir)
 icondir = join_paths(datadir, 'icons/hicolor/scalable/apps/')
-mandir1 = join_paths(datadir, 'man', 'man1')
+mandir1 = join_paths(prefix, 'man', 'man1')
 completionsdir = join_paths(datadir, 'bash-completion', 'completions')
 
 podir = join_paths(meson.project_source_root(), 'po')
