diff --git a/nvm.sh b/nvm.sh
index 7feee24..059334b 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -9,7 +9,7 @@
 
 # Make zsh glob matching behave same as bash
 # This fixes the "zsh: no matches found" errors
-if [ ! -z "$(which unsetopt 2>/dev/null)" ]; then
+if type "unsetopt" > /dev/null; then
     unsetopt nomatch 2>/dev/null
     NVM_CD_FLAGS="-q"
 fi