diff --git a/scripts/tongsuo.sh b/scripts/tongsuo.sh
index a183f9bf4e..24bdfee51a 100644
--- a/scripts/tongsuo.sh
+++ b/scripts/tongsuo.sh
@@ -1,12 +1,12 @@
 #!/bin/bash
 set -e
 
-if [ ${DISABLE_CRYPTO} = true ];then
+if [ "${DISABLE_CRYPTO}" = true ];then
   echo "crypto is disabled"
   exit 0
 fi
 
-if [ -d $TONGSUO_PATH ]; then
+if [ -d "$TONGSUO_PATH" ]; then
   echo "tongsuo already exists"
   exit 0
 fi