diff --git a/pre_commit/resources/hook-tmpl b/pre_commit/resources/hook-tmpl
index 53d29f9..66a8ad3 100755
--- a/pre_commit/resources/hook-tmpl
+++ b/pre_commit/resources/hook-tmpl
@@ -10,9 +10,7 @@ ARGS=(hook-impl)
 HERE="$(cd "$(dirname "$0")" && pwd)"
 ARGS+=(--hook-dir "$HERE" -- "$@")
 
-if [ -x "$INSTALL_PYTHON" ]; then
-    exec "$INSTALL_PYTHON" -mpre_commit "${ARGS[@]}"
-elif command -v pre-commit > /dev/null; then
+if command -v pre-commit > /dev/null; then
     exec pre-commit "${ARGS[@]}"
 else
     echo '`pre-commit` not found.  Did you forget to activate your virtualenv?' 1>&2