diff --git a/libvncserver b/libvncserver
index ef3b5743..b4d4a091 160000
--- a/libvncserver
+++ b/libvncserver
@@ -1 +1 @@
-Subproject commit ef3b57438564f2877148a23055f3f0ffce66df11
+Subproject commit b4d4a091f401283631b89cb5efc342d8c416a696