diff --git a/labgrid/remote/coordinator.py b/labgrid/remote/coordinator.py
index 97ed16d26..930f3306c 100644
--- a/labgrid/remote/coordinator.py
+++ b/labgrid/remote/coordinator.py
@@ -922,7 +922,7 @@ async def CreateReservation(self, request: labgrid_coordinator_pb2.CreateReserva
                     await context.abort(grpc.StatusCode.INVALID_ARGUMENT, f"Key {k} is invalid")
                 if not TAG_VAL.match(v):
                     await context.abort(grpc.StatusCode.INVALID_ARGUMENT, f"Value {v} is invalid")
-            fltr[k] = v
+                fltr[k] = v
 
         owner = self.clients[peer].name
         res = Reservation(owner=owner, prio=request.prio, filters=fltrs)