diff --git a/plugins/docker-options/commands b/plugins/docker-options/commands
index f6bdbdd4f..d3eb5a9eb 100755
--- a/plugins/docker-options/commands
+++ b/plugins/docker-options/commands
@@ -82,7 +82,7 @@ get_passed_docker_option() {
 add_passed_docker_option() {
   local passed_phases=("${!1}")
   shift
-  local passed_option_string="$@"
+  local passed_option_string="$*"
   local phase
   for phase in "${passed_phases[@]}"; do
     get_phase_file_path $phase
@@ -96,7 +96,7 @@ add_passed_docker_option() {
 remove_passed_docker_option() {
   local passed_phases=("${!1}")
   shift
-  local passed_option_string="$@"
+  local passed_option_string="$*"
   local phase
   for phase in "${passed_phases[@]}"; do
     get_phase_file_path $phase