diff --git a/wash/src/wash/control/Wash.java b/wash/src/wash/control/Wash.java
index 0f0f4bf..5755321 100644
--- a/wash/src/wash/control/Wash.java
+++ b/wash/src/wash/control/Wash.java
@@ -32,7 +32,7 @@ public class Wash {
             // if the user presses button 0, and a program has been started, stop it
 
             switch (n) {
-                case 0 -> t = new WashingProgramStop(io, temp, water, spin);
+                case 0 -> t.interrupt();
                 case 1 -> t = new WashingProgram1(io, temp, water, spin);
                 case 2 -> t = new WashingProgram2(io, temp, water, spin);
                 case 3 -> t = new WashingProgram3(io, temp, water, spin);
@@ -42,7 +42,8 @@ public class Wash {
                 }
             }
 
-            t.start();
+            if (!t.isInterrupted())
+                t.start();
         }
 
         temp.interrupt();