diff --git a/lib/Makefile.am b/lib/Makefile.am
index 1a47395d..dc3ee893 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -8,7 +8,7 @@ AM_CPPFLAGS = -DNP_STATE_DIR_PREFIX=\"$(localstatedir)\" \
 	-I$(srcdir) -I$(top_srcdir)/gl -I$(top_srcdir)/intl -I$(top_srcdir)/plugins
 
 libmonitoringplug_a_SOURCES = utils_base.c utils_disk.c utils_tcp.c utils_cmd.c maxfd.c
-EXTRA_DIST = utils_base.h utils_disk.h utils_tcp.h utils_cmd.h parse_ini.h extra_opts.h
+EXTRA_DIST = utils_base.h utils_disk.h utils_tcp.h utils_cmd.h parse_ini.h extra_opts.h maxfd.h
 
 if USE_PARSE_INI
 libmonitoringplug_a_SOURCES += parse_ini.c extra_opts.c