diff --git a/miscutils/rx.c b/miscutils/rx.c
index c48a61fd0..af597320c 100644
--- a/miscutils/rx.c
+++ b/miscutils/rx.c
@@ -207,6 +207,7 @@ static int receive(/*int read_fd, */int file_fd)
 		continue;
  error:
  timeout:
+		blockLength = 0;
 		errors++;
 		if (errors == MAXERRORS) {
 			/* Abort */