diff --git a/radio/src/storage/conversions/conversions_219_220.cpp b/radio/src/storage/conversions/conversions_219_220.cpp
index d77c29c82..6227964b5 100644
--- a/radio/src/storage/conversions/conversions_219_220.cpp
+++ b/radio/src/storage/conversions/conversions_219_220.cpp
@@ -43,7 +43,7 @@
 //    uint32_t countdownBeep:2;
 //    uint32_t minuteBeep:1;
 //    uint32_t persistent:2;
-//    int32_t  countdownStart:2;
+//    int32_t  countdownStart:2;  // -2=30s -1=20s 0=10s 1=5s converted to -2=5s -1=10s 0=20s 1=30s
 // -  uint32_t direction:1;
 //    NOBACKUP(char name[LEN_TIMER_NAME]);
 //  });
@@ -137,7 +137,7 @@ void convertModelData_219_to_220(ModelData &model)
     timer.countdownBeep = timer_219.countdownBeep;
     timer.minuteBeep = timer_219.minuteBeep;
     timer.persistent = timer_219.persistent;
-    timer.countdownStart = timer_219.countdownStart;
+    timer.countdownStart = (timer_219.countdownStart * -1) - 1;
 
   }