diff --git a/include/trace/trace_events.h b/include/trace/trace_events.h
index a77b690709cc..7f0b91dfb532 100644
--- a/include/trace/trace_events.h
+++ b/include/trace/trace_events.h
@@ -479,7 +479,7 @@ static struct trace_event_functions trace_event_type_funcs_##call = {	\
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
-#define ALIGN_STRUCTFIELD(type) ((int)(offsetof(struct {char a; type b;}, b)))
+#define ALIGN_STRUCTFIELD(type) ((int)(__alignof__(struct {type b;})))
 
 #undef __field_ext
 #define __field_ext(_type, _item, _filter_type) {			\