diff --git a/util/build-gnu.sh b/util/build-gnu.sh
index cb23f0ad0..f3596c411 100755
--- a/util/build-gnu.sh
+++ b/util/build-gnu.sh
@@ -107,7 +107,7 @@ cd -
 # Pass the feature flags to make, which will pass them to cargo
 "${MAKE}" PROFILE="${UU_MAKE_PROFILE}" CARGOFLAGS="${CARGO_FEATURE_FLAGS}"
 # min test for SELinux
-[ ${SELINUX_ENABLED} = 1 ] && touch g && "${UU_MAKE_PROFILE}"/stat -c%C g && rm g
+[ "${SELINUX_ENABLED}" = 1 ] && touch g && "${UU_MAKE_PROFILE}"/stat -c%C g && rm g
 
 cp "${UU_BUILD_DIR}/install" "${UU_BUILD_DIR}/ginstall" # The GNU tests rename this script before running, to avoid confusion with the make target
 # Create *sum binaries
@@ -141,7 +141,7 @@ else
     sed -i "s/^[[:blank:]]*PATH=.*/  PATH='${UU_BUILD_DIR//\//\\/}\$(PATH_SEPARATOR)'\"\$\$PATH\" \\\/" tests/local.mk
     ./bootstrap --skip-po
     ./configure --quiet --disable-gcc-warnings --disable-nls --disable-dependency-tracking --disable-bold-man-page-references \
-      "$([ ${SELINUX_ENABLED} = 1 ] && echo --with-selinux || echo --without-selinux)"
+      "$([ "${SELINUX_ENABLED}" = 1 ] && echo --with-selinux || echo --without-selinux)"
     #Add timeout to to protect against hangs
     sed -i 's|^"\$@|'"${SYSTEM_TIMEOUT}"' 600 "\$@|' build-aux/test-driver
     sed -i 's| tr | /usr/bin/tr |' tests/init.sh