diff --git a/scripts/postinst b/scripts/postinst
index eff944f..0278ef2 100644
--- a/scripts/postinst
+++ b/scripts/postinst
@@ -20,6 +20,9 @@ fi
 
 zshBin="/usr/bin/zsh"
 if [ -f $zshBin ]; then
+  if ! [ -d $zshLoc ]; then
+    zshLoc="/usr/share/zsh/vendor-completions"
+  fi
   if [ -d $zshLoc ]; then
     ln -sf "$ybconDir/completions/zsh-completion.zsh" "$zshLoc/_ybcon"
   fi