diff --git a/src/libeis-seat.c b/src/libeis-seat.c
index 3d2e1e9..a88d447 100644
--- a/src/libeis-seat.c
+++ b/src/libeis-seat.c
@@ -241,9 +241,12 @@ eis_seat_bind(struct eis_seat *seat, uint32_t caps)
 	}
 
 	caps &= seat->capabilities.c_mask;
-
 	seat->state = EIS_SEAT_STATE_BOUND;
-	eis_queue_seat_bind_event(seat, caps);
+
+	uint32_t old_caps = seat->capabilities.bound;
+	seat->capabilities.bound = caps;
+	if (old_caps != caps)
+		eis_queue_seat_bind_event(seat, caps);
 }
 
 void
diff --git a/src/libeis-seat.h b/src/libeis-seat.h
index 8b64d57..d37718d 100644
--- a/src/libeis-seat.h
+++ b/src/libeis-seat.h
@@ -51,6 +51,8 @@ struct eis_seat {
 	struct {
 		uint32_t c_mask; /* this is the C API bitmask */
 		uint64_t proto_mask; /* the protocol mask */
+
+		uint32_t bound; /* C API bitmask */
 	} capabilities;
 
 	struct list devices;