the include path for libevent2 is missing

diff --git a/src/libs/zbxdiscoverer/Makefile.am b/src/libs/zbxdiscoverer/Makefile.am
index 4ec0939..17d1329 100644
--- a/src/libs/zbxdiscoverer/Makefile.am
+++ b/src/libs/zbxdiscoverer/Makefile.am
@@ -22,4 +22,5 @@
 
 libzbxdiscoverer_a_CFLAGS = \
 	$(TLS_CFLAGS) \
+	$(LIBEVENT_CFLAGS) \
 	$(ARES_CFLAGS)
diff --git a/src/libs/zbxpoller/Makefile.am b/src/libs/zbxpoller/Makefile.am
index 13e9e14..5c4ff5a 100644
--- a/src/libs/zbxpoller/Makefile.am
+++ b/src/libs/zbxpoller/Makefile.am
@@ -49,6 +49,7 @@
 	$(TLS_CFLAGS) \
 	$(LIBXML2_CFLAGS) \
 	$(SNMP_CFLAGS) \
+	$(LIBEVENT_CFLAGS) \
 	$(ARES_CFLAGS)
 
 if HAVE_SSH