diff --git a/.zsh/functions/venv b/.zsh/functions/venv
index 49564ac..03ec83d 100644
--- a/.zsh/functions/venv
+++ b/.zsh/functions/venv
@@ -1,6 +1,6 @@
 # -*- mode: sh; -*-
 if [ "${#}" -eq 1 ]; then
-    venv_activate="$HOME/.virtualenv/$1/bin/activate"
+    local venv_activate="$HOME/.virtualenv/$1/bin/activate"
 
     if [ -r "$venv_activate" ]; then
         source $venv_activate