diff --git a/gnome-extra/evolution-ews/evolution-ews-3.34.4.ebuild b/gnome-extra/evolution-ews/evolution-ews-3.34.4.ebuild
index 775b146c143bc..b3b87637eb314 100644
--- a/gnome-extra/evolution-ews/evolution-ews-3.34.4.ebuild
+++ b/gnome-extra/evolution-ews/evolution-ews-3.34.4.ebuild
@@ -17,7 +17,7 @@ IUSE="test"
 RDEPEND="
 	dev-db/sqlite:3
 	>=dev-libs/glib-2.46:2
-	>=dev-libs/libical-3.0.5:0=[introspection]
+	>=dev-libs/libical-3.0.5:0=[introspection(-)]
 	>=dev-libs/libmspack-0.4
 	dev-libs/libxml2:2
 	>=gnome-extra/evolution-data-server-${PV}:0=