diff --git a/shared/utils/check_env.py b/shared/utils/check_env.py
index 61af197..95a0a03 100644
--- a/shared/utils/check_env.py
+++ b/shared/utils/check_env.py
@@ -14,5 +14,5 @@ def check_env(
     for env_var in var_list:
         if env_var not in os.environ:
             missing_vars.append(env_var)
-    if len(missing_vars) > 0:
+    if missing_vars:
         raise OSError(f"environment variable(s) not set: {missing_vars}")