diff --git a/scripts/no_bool_in_generic.py b/scripts/no_bool_in_generic.py
index c483d221a4266..15bc2247469c7 100644
--- a/scripts/no_bool_in_generic.py
+++ b/scripts/no_bool_in_generic.py
@@ -65,7 +65,7 @@ def replace_bool_with_bool_t(to_replace, content: str) -> str:
                     + replaced_line[col_offset + 4 :]
                 )
         new_lines.append(replaced_line)
-    return "\n".join(new_lines)
+    return "\n".join(new_lines) + "\n"
 
 
 def check_for_bool_in_generic(content: str) -> tuple[bool, str]:
diff --git a/scripts/tests/test_no_bool_in_generic.py b/scripts/tests/test_no_bool_in_generic.py
index 0bc91c5d1cf1e..a57612548dcc5 100644
--- a/scripts/tests/test_no_bool_in_generic.py
+++ b/scripts/tests/test_no_bool_in_generic.py
@@ -1,7 +1,7 @@
 from scripts.no_bool_in_generic import check_for_bool_in_generic
 
-BAD_FILE = "def foo(a: bool) -> bool:\n    return bool(0)"
-GOOD_FILE = "def foo(a: bool_t) -> bool_t:\n    return bool(0)"
+BAD_FILE = "def foo(a: bool) -> bool:\n    return bool(0)\n"
+GOOD_FILE = "def foo(a: bool_t) -> bool_t:\n    return bool(0)\n"
 
 
 def test_bad_file_with_replace():