diff --git a/Makefile.in b/Makefile.in
index 8d37dfae74..d16e058084 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -19,6 +19,7 @@ INSTALL_TARGETS = install-conf install-htdocs install-error install-icons \
 	install-man
 
 DISTCLEAN_TARGETS  = include/ap_config_auto.h include/ap_config_layout.h \
+	include/apache_probes.h \
 	modules.c config.cache config.log config.status build/config_vars.mk \
 	build/rules.mk docs/conf/httpd.conf docs/conf/extra/*.conf shlibtool \
 	build/pkg/pkginfo build/config_vars.sh