diff --git a/data/campaigns/Eastern_Invasion/utils/animations.cfg b/data/campaigns/Eastern_Invasion/utils/animations.cfg
index 724046d676f..69db94b2422 100644
--- a/data/campaigns/Eastern_Invasion/utils/animations.cfg
+++ b/data/campaigns/Eastern_Invasion/utils/animations.cfg
@@ -1,3 +1,5 @@
+#textdomain wesnoth-ei
+
 # Campaign-specific failed teleport animation
 #define TELEPORT_FAILED_ANIMATION
     start_time=-1200