diff --git a/bootstrap.sh b/bootstrap.sh
index 769b92ca26..64a96ebbd2 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -39,7 +39,7 @@ usage()
 }
 
 
-while getopts "hP-:"  opt; do
+while getopts "hP:-:"  opt; do
     case $opt in
         "P") python=$OPTARG ;;
         "h") usage && exit 0 ;;