diff --git a/google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/HttpStorageRpc.java b/google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/HttpStorageRpc.java
index 19c9324518d7..e59b24d67d45 100644
--- a/google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/HttpStorageRpc.java
+++ b/google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/spi/v1/HttpStorageRpc.java
@@ -718,7 +718,7 @@ public String open(StorageObject object, Map<Option, ?> options) {
       String scheme = url.getScheme();
       String host = url.getHost();
       int port = url.getPort();
-      port = port < 0 ? port : url.toURL().getDefaultPort();
+      port = port > 0 ? port : url.toURL().getDefaultPort();
       String path = "/upload" + url.getRawPath();
       url = new GenericUrl(scheme + "://" + host + ":" + port + path);
       url.set("uploadType", "resumable");