diff --git a/configure.ac b/configure.ac
index 58a5fd5da47ab960515d34f245bc67e0538b47d9..e582e9268d8b470eaa67101a1ccdbf9c7f18f0b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -138,6 +138,7 @@ src/audio/pacpp/source/portaudiocpp/Makefile \
 src/gui/Makefile \
 src/gui/qt/Makefile \
 utilspp/Makefile \
+utilspp/functor/Makefile \
 utilspp/singleton/Makefile \
 stund/Makefile \
 pixmaps/Makefile \