diff --git a/reflowctl/reflowctl.ino b/reflowctl/reflowctl.ino
index d2fcc2f..3eb37a3 100644
--- a/reflowctl/reflowctl.ino
+++ b/reflowctl/reflowctl.ino
@@ -19,7 +19,7 @@
 __attribute__((__unused__)) static unsigned int time = 0; // profile seconds
 __attribute__((__unused__)) static unsigned int temperatur = 25; // actual oven temp
 __attribute__((__unused__)) static unsigned int last_temperatur = 25; // last oven temp
-__attribute__((__unused__)) static unsigned int actual_dt = 0; // actual difference from last to actual temperatur
+__attribute__((__unused__)) static int actual_dt = 0; // actual difference from last to actual temperatur
 
 
 // profile temperatures
@@ -208,7 +208,7 @@ static void handle_ramp_up_state() {
   Serial.println("RAMP_UP_STATE");
   if (temperatur > Tl) {
     Tl_time_start = time;
-    state++;
+    set_tal_first_state();
   }
 }