1 files changed, 1 insertions, 1 deletions

diff --git a/src/makecolumns.sh b/src/makecolumns.sh
index f5803c6..ff8a1e4 100755
--- a/src/makecolumns.sh
+++ b/src/makecolumns.sh
@@ -204,7 +204,7 @@ handle_new_format() {
     printf "done.\n"
 
     printf "Splitting decompressed chunks into their columns (11 total) ... 1, "
-    jot -w "file_%05X" - 0 $rows 11 | xargs cat | xxd -ps -c1 > column_0
+    jot -w "file_%05X" - 0 $(( rows - 1 )) 11 | xargs cat | xxd -ps -c1 > column_0
 
     for col in 1 2 3 4 5 6 7 8 9 10; do
       printf "%d, " $(( col + 1 ))