diff --git a/org/postgresql/ds/common/BaseDataSource.java b/org/postgresql/ds/common/BaseDataSource.java
index f11458c3d8..67d71f7be8 100644
--- a/org/postgresql/ds/common/BaseDataSource.java
+++ b/org/postgresql/ds/common/BaseDataSource.java
@@ -186,7 +186,7 @@ public int getProtocolVersion()
         return protocolVersion;
     }
 
-    public void setProtocolVersion(int protocolversion)
+    public void setProtocolVersion(int protocolVersion)
     {
         this.protocolVersion = protocolVersion;
     }