diff --git a/tooling/reproducible/linux_repro_build_compare.sh b/tooling/reproducible/linux_repro_build_compare.sh
index 74678439e6..e3e720c3bb 100755
--- a/tooling/reproducible/linux_repro_build_compare.sh
+++ b/tooling/reproducible/linux_repro_build_compare.sh
@@ -35,7 +35,7 @@ installPrereqs() {
       if [ ! -r /usr/local/bin/autoconf ]; then
         curl --output ./autoconf-2.69.tar.gz https://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
         ACSHA256=954bd69b391edc12d6a4a51a2dd1476543da5c6bbf05a95b59dc0dd6fd4c2969
-        ACCHKSHA=`sha256sum ./autoconf-2.69.tar.gz|cut -d" " -f1
+        ACCHKSHA=`sha256sum ./autoconf-2.69.tar.gz|cut -d" " -f1`
         if [[ "$ACSHA256" == "$ACCHKSHA" ]]; then
           echo "Hi"
           tar xpfz ./autoconf-2.69.tar.gz || exit 1