diff --git a/.zsh/functions.zsh b/.zsh/functions.zsh
index 9bc9020..9a3989e 100644
--- a/.zsh/functions.zsh
+++ b/.zsh/functions.zsh
@@ -33,7 +33,7 @@ upload() {
 
 
 timesh() {
-  shell=${1-$SHELL}
+  shell=${1:-$SHELL}
   for i in $(seq 1 10); do /usr/bin/time $shell -i -c exit; done
 }