diff --git a/tests/data/test001.param b/tests/data/test001.param
index 5cc53eb0..7fb0e1f5 100644
--- a/tests/data/test001.param
+++ b/tests/data/test001.param
@@ -1,3 +1,3 @@
 TITLE='Recursive directory file list'
 COMMAND='$PROGRAM --camera="Directory Browse" --port=disk:"$STAGINGDIR" -L 2> "$ERRFILE" > "$OUTFILE"'
-SEDCOMMAND='s@\(in folder .\).*/@\1@; s/^\(#.*\)\( [-1-9][0-9]\{1,12\}\)$/\1 <<MTIME>>/'
+SEDCOMMAND='s@\(in folder .\).*/@\1@; s/^\(#.*\)\( [1-9][0-9]\{1,12\}\)$/\1 <<MTIME>>/'