diff --git a/README.md b/README.md
index ea739f39..ab5ded5f 100644
--- a/README.md
+++ b/README.md
@@ -317,14 +317,14 @@ See [Advanced configuration](#advanced-configuration) for details and more confi
     * to add to `~/.bash_profile`:
       ~~~ bash
       echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile
-      echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile
+      echo '[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile
       echo 'eval "$(pyenv init -)"' >> ~/.bash_profile
       ~~~
 
   - For **Zsh**:
     ~~~ zsh
     echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zshrc
-    echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
+    echo '[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
     echo 'eval "$(pyenv init -)"' >> ~/.zshrc
     ~~~
 
diff --git a/libexec/pyenv-init b/libexec/pyenv-init
index c1e0da7b..5ce275e1 100755
--- a/libexec/pyenv-init
+++ b/libexec/pyenv-init
@@ -165,7 +165,7 @@ function help_() {
       fi
       echo
       echo 'export PYENV_ROOT="$HOME/.pyenv"'
-      echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"'
+      echo '[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"'
       echo 'eval "$(pyenv init -)"'
       ;;
     esac