diff --git a/README.md b/README.md
index 9eb8c50..bcb42c3 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
 <sub>**Note:** If the environment variable `$XDG_CONFIG_HOME` is present, it will place the `nvm` files there.</sub>
 
 ```sh
-export NVM_DIR="${XDG_CONFIG_HOME/:-$HOME/.}nvm"
+export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
 [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
 ```
 
diff --git a/install.sh b/install.sh
index 67349ad..be611b3 100755
--- a/install.sh
+++ b/install.sh
@@ -7,11 +7,7 @@ nvm_has() {
 }
 
 nvm_default_install_dir() {
-  if [ -n "${XDG_CONFIG_HOME-}" ]; then
-    printf %s "${XDG_CONFIG_HOME}/nvm"
-  else
-    printf %s "${HOME}/.nvm"
-  fi
+  [ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm"
 }
 
 nvm_install_dir() {