diff --git a/engine/client/cl_gameui.c b/engine/client/cl_gameui.c
index 31abdace..b5b70325 100644
--- a/engine/client/cl_gameui.c
+++ b/engine/client/cl_gameui.c
@@ -1220,7 +1220,8 @@ static ui_extendedfuncs_t gExtendedfuncs =
 	Con_UtfProcessChar,
 	Con_UtfMoveLeft,
 	Con_UtfMoveRight,
-	pfnGetRenderers
+	pfnGetRenderers,
+	Sys_DoubleTime
 };
 
 void UI_UnloadProgs( void )
diff --git a/engine/menu_int.h b/engine/menu_int.h
index 2e622bef..d97d3685 100644
--- a/engine/menu_int.h
+++ b/engine/menu_int.h
@@ -204,6 +204,8 @@ typedef struct ui_extendedfuncs_s {
 	// new engine extended api start here
 	// returns 1 if there are more in list, otherwise 0
 	int (*pfnGetRenderers)( unsigned int num, char *shortName, size_t size1, char *readableName, size_t size2 );
+	
+	double (*pfnDoubleTime)( void );
 } ui_extendedfuncs_t;
 
 // deprecated export from old engine
diff --git a/mainui b/mainui
index 8bcd477c..9ef06db9 160000
--- a/mainui
+++ b/mainui
@@ -1 +1 @@
-Subproject commit 8bcd477cc8de20f3d91c6fd1bed6f00315321b98
+Subproject commit 9ef06db97fd612c820674c399db757d00176ada5