diff --git a/dev/breeze/src/airflow_breeze/utils/selective_checks.py b/dev/breeze/src/airflow_breeze/utils/selective_checks.py
index 32d369d8bfc20..6497ad4713976 100644
--- a/dev/breeze/src/airflow_breeze/utils/selective_checks.py
+++ b/dev/breeze/src/airflow_breeze/utils/selective_checks.py
@@ -1460,7 +1460,7 @@ def _find_caplog_in_def(cls, added_lines):
             if all(keyword in added_lines[line_counter] for keyword in ["def", "caplog", "(", ")"]):
                 return True
             if "def" in added_lines[line_counter] and ")" not in added_lines[line_counter]:
-                while ")" not in added_lines[line_counter]:
+                while line_counter < len(added_lines) and ")" not in added_lines[line_counter]:
                     if "caplog" in added_lines[line_counter]:
                         return True
                     line_counter += 1