diff --git a/pre_commit_hooks/terraform_inputs_jenkins_pipeline_params.py b/pre_commit_hooks/terraform_inputs_jenkins_pipeline_params.py
index 5517abd..35dffd7 100644
--- a/pre_commit_hooks/terraform_inputs_jenkins_pipeline_params.py
+++ b/pre_commit_hooks/terraform_inputs_jenkins_pipeline_params.py
@@ -19,7 +19,7 @@
 
 def get_terraform_input_vars(terraform_files):
   try:
-    raw_json = subprocess.check_output(['terraform-docs', '--no-sort', '--with-aggregate-type-defaults', 'json', ' '.join(terraform_files)])
+    raw_json = subprocess.check_output(['terraform-docs', '--no-sort', '--with-aggregate-type-defaults', 'json'] + terraform_files)
   except subprocess.CalledProcessError:
     raw_json = '{ "Inputs": [] }'