diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 6de0e3ac..886f9676 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2288,7 +2288,8 @@ void loop1() {
   delay(5); //2 1);
 	
 // check pushbutton
-    int pb_value = digitalRead(MAIN_PB_PIN);
+    int pb_value;
+    pb_value = digitalRead(MAIN_PB_PIN);
     if (pb_value == PRESSED) {
 	if (pb_state == RELEASED) {
 	  pb_press_start = millis();