diff --git a/guacamole-common/src/main/java/net/sourceforge/guacamole/net/GuacamoleTunnel.java b/guacamole-common/src/main/java/net/sourceforge/guacamole/net/GuacamoleTunnel.java
index 4a7bc0fd5..3ed3f1677 100644
--- a/guacamole-common/src/main/java/net/sourceforge/guacamole/net/GuacamoleTunnel.java
+++ b/guacamole-common/src/main/java/net/sourceforge/guacamole/net/GuacamoleTunnel.java
@@ -57,8 +57,6 @@ public class GuacamoleTunnel {
     private ReentrantLock readerLock;
     private ReentrantLock writerLock;
 
-    private boolean open = true;
-
     /**
      * Creates a new GuacamoleTunnel which synchronizes access to the
      * Guacamole instruction stream associated with the given GuacamoleSocket.