diff --git a/libc/include/sys/stat.h b/libc/include/sys/stat.h
index 4184f6c..623631e 100644
--- a/libc/include/sys/stat.h
+++ b/libc/include/sys/stat.h
@@ -40,7 +40,7 @@
 
 __BEGIN_DECLS
 
-#if defined(__aarch64__)
+#if defined(__aarch64__) || defined(__riscv)
 #define __STAT64_BODY \
   dev_t st_dev; \
   ino_t st_ino; \
diff --git a/tests/headers/posix/sys_stat_h.c b/tests/headers/posix/sys_stat_h.c
index b22e34f..a299426 100644
--- a/tests/headers/posix/sys_stat_h.c
+++ b/tests/headers/posix/sys_stat_h.c
@@ -69,7 +69,7 @@
   STRUCT_MEMBER(struct stat, struct timespec, st_mtim);
   STRUCT_MEMBER(struct stat, struct timespec, st_ctim);
 #if defined(__BIONIC__)
-#if defined(__aarch64__)
+#if defined(__aarch64__) || defined(__riscv)
   STRUCT_MEMBER(struct stat, int, st_blksize);
 #elif defined(__x86_64__)
   STRUCT_MEMBER(struct stat, long, st_blksize);