diff --git a/shell/zsh b/shell/zsh
index d726bce..37bf6d6 100644
--- a/shell/zsh
+++ b/shell/zsh
@@ -3,18 +3,18 @@ function __tas_task_idx() {
 }
 
 function __tas_show() {
-  tas show $(__tas_task_idx "$@")
+  tas show $(__tas_task_idx "$1")
 }
 
 function __tas_start() {
   if [[ "$1" != ""  ]]; then
-    tas start $(__tas_task_idx "$@")
+    tas start $(__tas_task_idx "$1")
   fi
 }
 
 function __tas_remove() {
   if [[ "$1" != ""  ]]; then
-    tas remove $(__tas_task_idx "$@")
+    tas remove $(__tas_task_idx "$1")
   fi
 }