diff --git a/BaseTools/BuildEnv b/BaseTools/BuildEnv
index f74881111c..ff0c5115a5 100755
--- a/BaseTools/BuildEnv
+++ b/BaseTools/BuildEnv
@@ -90,7 +90,7 @@ StoreCurrentConfiguration() {
   #
   OUTPUT_FILE=$CONF_PATH/BuildEnv.sh
   #echo Storing current configuration into $OUTPUT_FILE
-  echo "# Auto-generated by ${BASH_SOURCE[0]}" > $OUTPUT_FILE
+  echo "# Auto-generated by ${BASH_SOURCE[0]}" >| $OUTPUT_FILE
   GenerateShellCodeToSetVariable WORKSPACE $OUTPUT_FILE
   GenerateShellCodeToSetVariable EDK_TOOLS_PATH $OUTPUT_FILE
   GenerateShellCodeToUpdatePath $OUTPUT_FILE