diff --git a/pythonbpf/vmlinux_parser/ir_gen/ir_generation.py b/pythonbpf/vmlinux_parser/ir_gen/ir_generation.py
index 989a448..cbf7f9d 100644
--- a/pythonbpf/vmlinux_parser/ir_gen/ir_generation.py
+++ b/pythonbpf/vmlinux_parser/ir_gen/ir_generation.py
@@ -4,7 +4,6 @@ from ..dependency_handler import DependencyHandler
 from .debug_info_gen import debug_info_generation
 from ..dependency_node import DependencyNode
 import llvmlite.ir as ir
-from typing import Optional
 
 logger = logging.getLogger(__name__)
 
@@ -132,7 +131,7 @@ class IRGenerator:
         field_index: int,
         is_indexed: bool = False,
         index: int = 0,
-        containing_type_size: Optional[int] = None,
+        containing_type_size: int = 0,
     ) -> str:
         if is_indexed:
             name = (
diff --git a/tests/failing_tests/xdp_pass.py b/tests/failing_tests/xdp_pass.py
index 595632b..bf31ee8 100644
--- a/tests/failing_tests/xdp_pass.py
+++ b/tests/failing_tests/xdp_pass.py
@@ -3,6 +3,7 @@ from pythonbpf.maps import HashMap
 from pythonbpf.helper import XDP_PASS
 from vmlinux import TASK_COMM_LEN  # noqa: F401
 from vmlinux import struct_trace_event_raw_sys_enter  # noqa: F401
+from vmlinux import struct_posix_cputimers  # noqa: F401
 from vmlinux import struct_xdp_md
 # from vmlinux import struct_trace_event_raw_sys_enter  # noqa: F401
 # from vmlinux import struct_ring_buffer_per_cpu  # noqa: F401