diff --git a/scheds/include/scx/sdt_task_impl.bpf.h b/scheds/include/scx/sdt_task_impl.bpf.h
index e6ce0b71..1e820191 100644
--- a/scheds/include/scx/sdt_task_impl.bpf.h
+++ b/scheds/include/scx/sdt_task_impl.bpf.h
@@ -8,7 +8,11 @@ struct {
 	__uint(type, BPF_MAP_TYPE_ARENA);
 	__uint(map_flags, BPF_F_MMAPABLE);
 	__uint(max_entries, 1 << 15); /* number of pages */
+#ifdef __TARGET_ARCH_arm64
+        __ulong(map_extra, (1ull << 32)); /* start of mmap() region */
+#else
         __ulong(map_extra, (1ull << 44)); /* start of mmap() region */
+#endif
 } arena __weak SEC(".maps");
 
 /*