diff --git a/index.html b/index.html
index 0374693..87047c7 100644
--- a/index.html
+++ b/index.html
@@ -207,6 +207,7 @@
                 },lunghezzaExec);
             }
             function toggleProcessiPronti(){
+                if(processiPronti.length==0) return;
                 interrompi= !interrompi;
                 if(!interrompi) {
                     scriviLog("<span style=\"color: white\">Continuo...</span>");