diff --git a/examples/backchannel.c b/examples/backchannel.c
index 4db01a8..6a21390 100644
--- a/examples/backchannel.c
+++ b/examples/backchannel.c
@@ -33,7 +33,7 @@ typedef struct backChannelMsg {
 	uint32_t size;
 } backChannelMsg;
 
-rfbBool enableBackChannel(rfbClientPtr cl, void* data, int encoding)
+rfbBool enableBackChannel(rfbClientPtr cl, void** data, int encoding)
 {
 	if(encoding == rfbBackChannel) {
 		backChannelMsg msg;
diff --git a/libvncserver/rfbserver.c b/libvncserver/rfbserver.c
index 652b1b7..474351c 100644
--- a/libvncserver/rfbserver.c
+++ b/libvncserver/rfbserver.c
@@ -921,7 +921,7 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
 				rfbExtensionData* next = e->next;
 				if(e->extension->enablePseudoEncoding &&
 					e->extension->enablePseudoEncoding(cl,
-						e->data, (int)enc))
+						&e->data, (int)enc))
 					/* ext handles this encoding */
 					break;
 				e = next;
@@ -938,9 +938,7 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
 					while(encs && *encs!=0) {
 						if(*encs==(int)enc) {
 							void* data = NULL;
-							if(e->newClient)
-								e->newClient(cl, &data);
-							if(!e->enablePseudoEncoding(cl, data, (int)enc)) {
+							if(!e->enablePseudoEncoding(cl, &data, (int)enc)) {
 								rfbLog("Installed extension pretends to handle pseudo encoding 0x%x, but does not!\n",(int)enc);
 							} else {
 								rfbEnableExtension(cl, e, data);
diff --git a/rfb/rfb.h b/rfb/rfb.h
index 3338f7d..caec018 100644
--- a/rfb/rfb.h
+++ b/rfb/rfb.h
@@ -170,7 +170,7 @@ typedef struct _rfbProtocolExtension {
 	/* returns TRUE if that pseudo encoding is handled by the extension.
 	   encodingNumber==0 means "reset encodings". */
 	rfbBool (*enablePseudoEncoding)(struct _rfbClientRec* client,
-			void* data, int encodingNumber);
+			void** data, int encodingNumber);
 	/* returns TRUE if message was handled */
 	rfbBool (*handleMessage)(struct _rfbClientRec* client,
 				void* data,