diff --git a/.github/tests/run_on_changed_playbooks.py b/.github/tests/run_on_changed_playbooks.py
index c09b297..be57116 100644
--- a/.github/tests/run_on_changed_playbooks.py
+++ b/.github/tests/run_on_changed_playbooks.py
@@ -23,7 +23,7 @@ def main():
     parser = argparse.ArgumentParser(description="Get changed JSON or Python files in the root directory without extensions compared to a base branch")
     
     # Add an argument for the base branch
-    parser.add_argument('--base_branch', type=str, help='The base branch to compare against')
+    parser.add_argument('--base-branch', type=str, help='The base branch to compare against')
     parser.add_argument('--robot-path', type=str, help='Path of the robot test suite')
  
     # Parse the arguments