diff --git a/package/asterisk/asterisk.mk b/package/asterisk/asterisk.mk
index de3a0d5291..921281e260 100644
--- a/package/asterisk/asterisk.mk
+++ b/package/asterisk/asterisk.mk
@@ -57,7 +57,6 @@ ASTERISK_CONF_OPTS = \
 	--without-gmime \
 	--without-h323 \
 	--without-hoard \
-	--without-ical \
 	--without-iconv \
 	--without-iksemel \
 	--without-imap \
@@ -149,6 +148,13 @@ else
 ASTERISK_CONF_OPTS += --without-bluetooth
 endif
 
+ifeq ($(BR2_PACKAGE_LIBICAL),y)
+ASTERISK_DEPENDENCIES += libical
+ASTERISK_CONF_OPTS += --with-ical
+else
+ASTERISK_CONF_OPTS += --without-ical
+endif
+
 ifeq ($(BR2_PACKAGE_NEON),y)
 ASTERISK_DEPENDENCIES += neon
 ASTERISK_CONF_OPTS += --with-neon