diff --git a/CMakeLists.txt b/CMakeLists.txt
index adb1650b0..94f2ab29f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,6 +65,7 @@ endif()
 
 include(FeatureSummary)
 include(Manpage)
+include(GNUInstallDirs)
 
 if (enable-gdk-pixbuf)
   if (GDK_PIXBUF_FOUND)