diff --git a/libc/arch-x86/syscalls/fchmod.S b/libc/arch-x86/syscalls/__fchmod.S
similarity index 94%
rename from libc/arch-x86/syscalls/fchmod.S
rename to libc/arch-x86/syscalls/__fchmod.S
index 37851ff..7ad213e 100644
--- a/libc/arch-x86/syscalls/fchmod.S
+++ b/libc/arch-x86/syscalls/__fchmod.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmod)
+ENTRY(__fchmod)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -23,4 +23,4 @@
     popl    %ecx
     popl    %ebx
     ret
-END(fchmod)
+END(__fchmod)
diff --git a/libc/arch-x86/syscalls/fchmodat.S b/libc/arch-x86/syscalls/__fchmodat.S
similarity index 70%
rename from libc/arch-x86/syscalls/fchmodat.S
rename to libc/arch-x86/syscalls/__fchmodat.S
index f515512..f03c03f 100644
--- a/libc/arch-x86/syscalls/fchmodat.S
+++ b/libc/arch-x86/syscalls/__fchmodat.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(fchmodat)
+ENTRY(__fchmodat)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -12,13 +12,9 @@
     pushl   %edx
     .cfi_adjust_cfa_offset 4
     .cfi_rel_offset edx, 0
-    pushl   %esi
-    .cfi_adjust_cfa_offset 4
-    .cfi_rel_offset esi, 0
-    mov     20(%esp), %ebx
-    mov     24(%esp), %ecx
-    mov     28(%esp), %edx
-    mov     32(%esp), %esi
+    mov     16(%esp), %ebx
+    mov     20(%esp), %ecx
+    mov     24(%esp), %edx
     movl    $__NR_fchmodat, %eax
     int     $0x80
     cmpl    $-MAX_ERRNO, %eax
@@ -28,9 +24,8 @@
     call    __set_errno_internal
     addl    $4, %esp
 1:
-    popl    %esi
     popl    %edx
     popl    %ecx
     popl    %ebx
     ret
-END(fchmodat)
+END(__fchmodat)