diff --git a/libc/arch-arm64/syscalls/fchmod.S b/libc/arch-arm64/syscalls/__fchmod.S
similarity index 82%
rename from libc/arch-arm64/syscalls/fchmod.S
rename to libc/arch-arm64/syscalls/__fchmod.S
index 83a8060..05c67fc 100644
--- a/libc/arch-arm64/syscalls/fchmod.S
+++ b/libc/arch-arm64/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     mov     x8, __NR_fchmod
     svc     #0
 
@@ -11,4 +11,5 @@
     b.hi    __set_errno_internal
 
     ret
-END(fchmod)
+END(__fchmod)
+.hidden __fchmod
diff --git a/libc/arch-arm64/syscalls/fchmodat.S b/libc/arch-arm64/syscalls/__fchmodat.S
similarity index 81%
rename from libc/arch-arm64/syscalls/fchmodat.S
rename to libc/arch-arm64/syscalls/__fchmodat.S
index 8c5bb0e..2406ea8 100644
--- a/libc/arch-arm64/syscalls/fchmodat.S
+++ b/libc/arch-arm64/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     mov     x8, __NR_fchmodat
     svc     #0
 
@@ -11,4 +11,5 @@
     b.hi    __set_errno_internal
 
     ret
-END(fchmodat)
+END(__fchmodat)
+.hidden __fchmodat