diff --git a/arch/riscv64/bits/mman.h b/arch/riscv64/bits/mman.h
deleted file mode 100644
index 36950573..00000000
--- a/arch/riscv64/bits/mman.h
+++ /dev/null
@@ -1 +0,0 @@
-#define MAP_32BIT       0x40