diff --git a/tests/ci/unit_test_runner.sh b/tests/ci/unit_test_runner.sh
index ebf5df679..9f5e2ce39 100755
--- a/tests/ci/unit_test_runner.sh
+++ b/tests/ci/unit_test_runner.sh
@@ -17,18 +17,18 @@ usage() {
 BATCH_NUM="$1"
 is_number $BATCH_NUM || usage
 
-TESTS=( $(find $(dirname $0)/../unit -maxdepth 1 -name "*.bats") )
+TESTS=($(find "$(dirname $0)"/../unit -maxdepth 1 -name "*.bats"))
 HALF_TESTS=$(( ${#TESTS[@]} / 2 ))
-FIRST_HALF=${TESTS[@]:0:${HALF_TESTS}}
-LAST_HALF=${TESTS[@]:${HALF_TESTS}:${#TESTS[@]}}
+FIRST_HALF=("${TESTS[@]:0:${HALF_TESTS}}")
+LAST_HALF=("${TESTS[@]:${HALF_TESTS}:${#TESTS[@]}}")
 
 case "$BATCH_NUM" in
   1)
-    bats $FIRST_HALF
+    bats "${FIRST_HALF[@]}"
   ;;
 
   2)
-    bats $LAST_HALF
+    bats "${LAST_HALF[@]}"
   ;;
 
   *)