diff --git a/libc/bionic/statvfs.cpp b/libc/bionic/statvfs.cpp
index 5d58281..39c9332 100644
--- a/libc/bionic/statvfs.cpp
+++ b/libc/bionic/statvfs.cpp
@@ -18,8 +18,15 @@
 
 #include <sys/statfs.h>
 
-extern "C" int __statfs64(const char*, size_t, struct statfs*);
+// Paper over the fact that 32-bit kernels use fstatfs64/statfs64 with an extra argument,
+// but 64-bit kernels don't have the "64" bit suffix or the extra size_t argument.
+#if __LP64__
+#  define __fstatfs64(fd,size,buf) fstatfs(fd,buf)
+#  define __statfs64(path,size,buf) statfs(path,buf)
+#else
 extern "C" int __fstatfs64(int, size_t, struct statfs*);
+extern "C" int __statfs64(const char*, size_t, struct statfs*);
+#endif
 
 #define ST_VALID 0x0020