diff --git a/robotgo.go b/robotgo.go
index 0d17041..9b94541 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -324,7 +324,7 @@ func TypeString(x string) {
 func TypeStringDelayed(x string, y int) {
 	cx := C.CString(x)
 	cy := C.C.size_t(y)
-	C.aTypeStringDelayed(cx, y)
+	C.aTypeStringDelayed(cx, cy)
 	defer C.free(unsafe.Pointer(cx))
 }