diff --git a/tools/run_tests/python_utils/filter_pull_request_tests.py b/tools/run_tests/python_utils/filter_pull_request_tests.py
index 8e0dc70..4c09b34 100644
--- a/tools/run_tests/python_utils/filter_pull_request_tests.py
+++ b/tools/run_tests/python_utils/filter_pull_request_tests.py
@@ -124,10 +124,10 @@
   """
     # Get file changes between branch and merge-base of specified branch
     # Not combined to be Windows friendly
-    base_commit = check_output(
-        ["git", "merge-base", base_branch, "HEAD"]).rstrip()
-    return check_output(
-        ["git", "diff", base_commit, "--name-only", "HEAD"]).splitlines()
+    base_commit = check_output(["git", "merge-base", base_branch,
+                                "HEAD"]).rstrip()
+    return check_output(["git", "diff", base_commit, "--name-only",
+                         "HEAD"]).splitlines()
 
 
 def _can_skip_tests(file_names, triggers):