diff --git a/tests/test-all.sh b/tests/test-all.sh
index 90ab0b0bea95e14c5d583421d2b1aeccbdf92f6c..c4988c31c6734aea31ed0c86795431ea5e397b18 100755
--- a/tests/test-all.sh
+++ b/tests/test-all.sh
@@ -11,7 +11,7 @@ function runSimCaseOneByOne {
   while read -r line; do
     if [[ $line =~ ^run.* ]]; then
       case=`echo $line | awk '{print $NF}'`
-      ./test.sh -f $case > /dev/null && \
+      ./test.sh -f $case > /dev/null 2>&1 && \
         echo -e "${GREEN}$case success${NC}" || \
         echo -e "${RED}$case failed${NC}" | tee -a out.log
     fi