diff --git a/src/conio/mouse.c b/src/conio/mouse.c
index 681ce726e35bfbb788a675c5a721c4be9e2b0fa1..4ae67c89a6d8019275129fc3e9669aebeb2da784 100644
--- a/src/conio/mouse.c
+++ b/src/conio/mouse.c
@@ -42,7 +42,7 @@
 
 #include "ciolib.h"
 
-#define MSEC_CLOCK()	llroundl(xp_timer()*1000)
+#define MSEC_CLOCK()	xp_timer64()
 
 enum {
 	 MOUSE_NOSTATE