diff --git a/common/rfb/CConnection.cxx b/common/rfb/CConnection.cxx
index fcad405..af84226 100644
--- a/common/rfb/CConnection.cxx
+++ b/common/rfb/CConnection.cxx
@@ -46,7 +46,7 @@
     supportsLEDState(false),
     is(0), os(0), reader_(0), writer_(0),
     shared(false),
-    state_(RFBSTATE_UNINITIALISED), useProtocol3_3(false),
+    state_(RFBSTATE_UNINITIALISED),
     pendingPFChange(false), preferredEncoding(encodingTight),
     compressLevel(2), qualityLevel(-1),
     formatChange(false), encodingChange(false),
@@ -173,7 +173,7 @@
     state_ = RFBSTATE_INVALID;
     throw Exception("Server gave unsupported RFB protocol version %d.%d",
                     server.majorVersion, server.minorVersion);
-  } else if (useProtocol3_3 || server.beforeVersion(3,7)) {
+  } else if (server.beforeVersion(3,7)) {
     server.setVersion(3,3);
   } else if (server.afterVersion(3,8)) {
     server.setVersion(3,8);
diff --git a/common/rfb/CConnection.h b/common/rfb/CConnection.h
index 5a3ef91..66a71a2 100644
--- a/common/rfb/CConnection.h
+++ b/common/rfb/CConnection.h
@@ -62,10 +62,6 @@
     // server upon initialisation.
     void setShared(bool s) { shared = s; }
 
-    // setProtocol3_3 configures whether or not the CConnection should
-    // only ever support protocol version 3.3
-    void setProtocol3_3(bool s) {useProtocol3_3 = s;}
-
     // setFramebuffer configures the PixelBuffer that the CConnection
     // should render all pixel data in to. Note that the CConnection
     // takes ownership of the PixelBuffer and it must not be deleted by
@@ -225,8 +221,6 @@
 
     CharArray serverName;
 
-    bool useProtocol3_3;
-
     bool pendingPFChange;
     rfb::PixelFormat pendingPF;