diff --git a/connect/host.go b/connect/host.go
index a76f50e921dfd0cc3165d7f4418d06378667fd90..ca134aa48e89bbafb9c59ba0240018d6d6c7a4b4 100644
--- a/connect/host.go
+++ b/connect/host.go
@@ -404,8 +404,10 @@ func (h *Host) connectHelper() (err error) {
 		if windowSize != 0 {
 			dialOpts = append(dialOpts, grpc.WithInitialWindowSize(windowSize))
 			dialOpts = append(dialOpts, grpc.WithInitialConnWindowSize(windowSize))
+		} else {
+			jww.WARN.Printf("WindowSize not set, this can " +
+				"cause network performance issues")
 		}
-
 		// Create the connection
 		h.connection, err = grpc.DialContext(ctx, h.GetAddress(),
 			dialOpts...)