diff --git a/app/src/main/rs/decoder.rs b/app/src/main/rs/decoder.rs
index e437a8d..67519cb 100644
--- a/app/src/main/rs/decoder.rs
+++ b/app/src/main/rs/decoder.rs
@@ -72,6 +72,7 @@ static void robot36_decoder(int sync_timeout)
     if (!free_running && !vpos && !latch) {
         parity = 0;
         latch = 1;
+        mismatch_counter = 0;
     }
     prev_timeout = sync_timeout;
     static int even_sync_pos, odd_sync_pos;