diff --git a/src/main/java/io/lettuce/core/RedisURI.java b/src/main/java/io/lettuce/core/RedisURI.java
index 2affd54a4f..20226ae9d4 100644
--- a/src/main/java/io/lettuce/core/RedisURI.java
+++ b/src/main/java/io/lettuce/core/RedisURI.java
@@ -962,7 +962,7 @@ public static class Builder {
         private String host;
         private String socket;
         private String sentinelMasterId;
-        private int port;
+        private int port = DEFAULT_REDIS_PORT;
         private int database;
         private String clientName;
         private String username;