diff --git a/package/base-files/files/lib/preinit/10_indicate_preinit b/package/base-files/files/lib/preinit/10_indicate_preinit
index 56e96c63ba..deb5f2ae3a 100644
--- a/package/base-files/files/lib/preinit/10_indicate_preinit
+++ b/package/base-files/files/lib/preinit/10_indicate_preinit
@@ -97,6 +97,8 @@ preinit_config_board() {
 	else
 		# trim any vlan ids
 		ifname=${ifname%\.*}
+		# trim any vlan modifiers like :t
+		ifname=${ifname%\:*}
 	fi
 
 	pi_ifname=$ifname