diff --git a/devel-docs/reference/gimp-ui/meson.build b/devel-docs/reference/gimp-ui/meson.build
index 32594c72ca..8a40d82afe 100644
--- a/devel-docs/reference/gimp-ui/meson.build
+++ b/devel-docs/reference/gimp-ui/meson.build
@@ -35,5 +35,5 @@ gimp_ui_docs = custom_target('gimp-ui-docs',
   ],
   build_by_default: true,
   install: true,
-  install_dir: get_option('datadir') / 'doc' / 'gimp-@0@'.format(gimp_app_version),
+  install_dir: get_option('datadir') / 'doc' / 'gimp-' + gimp_api_version,
 )
diff --git a/devel-docs/reference/gimp/meson.build b/devel-docs/reference/gimp/meson.build
index 547974194b..357a8a8b4b 100644
--- a/devel-docs/reference/gimp/meson.build
+++ b/devel-docs/reference/gimp/meson.build
@@ -32,5 +32,5 @@ gimp_docs = custom_target('gimp-docs',
   ],
   build_by_default: true,
   install: true,
-  install_dir: get_option('datadir') / 'doc' / 'gimp-@0@'.format(gimp_app_version),
+  install_dir: get_option('datadir') / 'doc' / 'gimp-' + gimp_api_version,
 )