diff --git a/README.adoc b/README.adoc
index 165be63..31ed86e 100644
--- a/README.adoc
+++ b/README.adoc
@@ -124,8 +124,10 @@ can install it from
 https://addons.mozilla.org/en-US/firefox/addon/remwharead/[addons.mozilla.org]
 or build it yourself with `build_xpi.sh`.
 
-// Not possible yet. <https://github.com/go-gitea/gitea/issues/6359>
-// include::CONTRIBUTING.adoc[]
+== Contributing
+
+See
+https://schlomp.space/tastytea/remwharead/src/branch/main/CONTRIBUTING.adoc[CONTRIBUTING.adoc].
 
 == Copyright
 
diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index c0df415..5594349 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -1,5 +1,6 @@
 include(GNUInstallDirs)
 
-install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+# The trailing / is important.
+install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/"
   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}"
   FILES_MATCHING PATTERN "*.hpp")