diff --git a/defaults/main.yml b/defaults/main.yml
index 029788a..68c4bb1 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,6 +1,6 @@
 ---
 # For Python 3, use python3-pip.
-pip_package: "{{ 'python-pip' if ansible_python_interpreter.endswith('python2') else 'python3-pip' }}"
+pip_package: "{{ 'python-pip' if (ansible_python_interpreter| default('python3')).endswith('python2') else 'python3-pip' }}"
 pip_executable: "{{ 'pip3' if pip_package.startswith('python3') else 'pip' }}"
 
 pip_install_packages: []