diff --git a/README.md b/README.md
index c2c99aa..29d04f7 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ under `~/.pyenv/versions`.
 #### 2013XXYY
 
  * Remove `python-virtualenv` which was no longer used.
+ * Change the installation path of the `virtualenv.py` script. (`./libexec` -> `./libexec/pyenv-virtualenv`)
 
 #### 20130507
 
diff --git a/bin/pyenv-virtualenv b/bin/pyenv-virtualenv
index 7f82342..2ff900c 100755
--- a/bin/pyenv-virtualenv
+++ b/bin/pyenv-virtualenv
@@ -77,8 +77,6 @@ usage() {
 
 PYENV_VIRTUALENV_ROOT="$(abs_dirname "$0")/.."
 VIRTUALENV="${PYENV_VIRTUALENV_ROOT}/libexec/pyenv-virtualenv/virtualenv.py"
-[ -f "${VIRTUALENV}" ] || VIRTUALENV="${PYENV_VIRTUALENV_ROOT}/libexec/python-virtualenv/virtualenv.py" # backward compatibility before v20130307
-[ -f "${VIRTUALENV}" ] || VIRTUALENV="${PYENV_VIRTUALENV_ROOT}/libexec/virtualenv.py"
 VIRTUALENV_OPTIONS=()
 
 parse_options "$@"
diff --git a/install.sh b/install.sh
index 7f5f744..fa433bc 100755
--- a/install.sh
+++ b/install.sh
@@ -16,7 +16,7 @@ for file in bin/*; do
   cp "${file}" "${BIN_PATH}"
 done
 
-for file in libexec/*; do
+for file in libexec/pyenv-virtualenv/*.py; do
   cp "${file}" "${LIBEXEC_PATH}"
 done
 
diff --git a/libexec/virtualenv.py b/libexec/pyenv-virtualenv/virtualenv.py
similarity index 100%
rename from libexec/virtualenv.py
rename to libexec/pyenv-virtualenv/virtualenv.py