diff --git a/plugins/python-build/bin/pyenv-install b/plugins/python-build/bin/pyenv-install
index ce6966ef..ece78b3a 100755
--- a/plugins/python-build/bin/pyenv-install
+++ b/plugins/python-build/bin/pyenv-install
@@ -115,12 +115,7 @@ done
 
 unset VERSION_NAME
 
-# The first argument contains the definition to install. If the
-# argument is missing, try to install whatever local app-specific
-# version is specified by pyenv. Show usage instructions if a local
-# version is not specified.
 DEFINITION="${ARGUMENTS[0]}"
-[ -n "$DEFINITION" ] || DEFINITION="$(pyenv-local 2>/dev/null || true)"
 [ -n "$DEFINITION" ] || usage 1 >&2
 
 # Define `before_install` and `after_install` functions that allow