diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index ffab9f6..2e2cd11 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -203,7 +203,7 @@
 int           nanosleep(const struct timespec*, struct timespec*)   all
 int           clock_settime(clockid_t, const struct timespec*)  all
 int           clock_getres(clockid_t, struct timespec*)   all
-int           __clock_nanosleep:clock_nanosleep(clockid_t, int, const struct timespec*, struct timespec*)  all
+int           ___clock_nanosleep:clock_nanosleep(clockid_t, int, const struct timespec*, struct timespec*)  all
 int           getitimer(int, const struct itimerval*)   all
 int           setitimer(int, const struct itimerval*, struct itimerval*)  all
 int           __timer_create:timer_create(clockid_t clockid, struct sigevent* evp, __kernel_timer_t* timerid)    all
diff --git a/libc/arch-arm/syscalls/__clock_nanosleep.S b/libc/arch-arm/syscalls/___clock_nanosleep.S
similarity index 78%
rename from libc/arch-arm/syscalls/__clock_nanosleep.S
rename to libc/arch-arm/syscalls/___clock_nanosleep.S
index ba7ffc4..31420bb 100644
--- a/libc/arch-arm/syscalls/__clock_nanosleep.S
+++ b/libc/arch-arm/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     mov     ip, r7
     ldr     r7, =__NR_clock_nanosleep
     swi     #0
@@ -11,4 +11,5 @@
     bxls    lr
     neg     r0, r0
     b       __set_errno_internal
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/arch-arm64/syscalls/__clock_nanosleep.S b/libc/arch-arm64/syscalls/___clock_nanosleep.S
similarity index 75%
rename from libc/arch-arm64/syscalls/__clock_nanosleep.S
rename to libc/arch-arm64/syscalls/___clock_nanosleep.S
index 1df15d6..0dcfd4f 100644
--- a/libc/arch-arm64/syscalls/__clock_nanosleep.S
+++ b/libc/arch-arm64/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     mov     x8, __NR_clock_nanosleep
     svc     #0
 
@@ -11,5 +11,5 @@
     b.hi    __set_errno_internal
 
     ret
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/arch-mips/syscalls/__clock_nanosleep.S b/libc/arch-mips/syscalls/___clock_nanosleep.S
similarity index 78%
rename from libc/arch-mips/syscalls/__clock_nanosleep.S
rename to libc/arch-mips/syscalls/___clock_nanosleep.S
index 97bfa27..4879489 100644
--- a/libc/arch-mips/syscalls/__clock_nanosleep.S
+++ b/libc/arch-mips/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     .set noreorder
     .cpload t9
     li v0, __NR_clock_nanosleep
@@ -16,4 +16,5 @@
     j t9
     nop
     .set reorder
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/arch-mips64/syscalls/__clock_nanosleep.S b/libc/arch-mips64/syscalls/___clock_nanosleep.S
similarity index 82%
rename from libc/arch-mips64/syscalls/__clock_nanosleep.S
rename to libc/arch-mips64/syscalls/___clock_nanosleep.S
index 204675f..e9fb316 100644
--- a/libc/arch-mips64/syscalls/__clock_nanosleep.S
+++ b/libc/arch-mips64/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     .set push
     .set noreorder
     li v0, __NR_clock_nanosleep
@@ -22,5 +22,5 @@
     j t9
     move ra, t0
     .set pop
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/arch-x86/syscalls/__clock_nanosleep.S b/libc/arch-x86/syscalls/___clock_nanosleep.S
similarity index 90%
rename from libc/arch-x86/syscalls/__clock_nanosleep.S
rename to libc/arch-x86/syscalls/___clock_nanosleep.S
index 75a54d1..088a92e 100644
--- a/libc/arch-x86/syscalls/__clock_nanosleep.S
+++ b/libc/arch-x86/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     pushl   %ebx
     .cfi_def_cfa_offset 8
     .cfi_rel_offset ebx, 0
@@ -33,4 +33,5 @@
     popl    %ecx
     popl    %ebx
     ret
-END(__clock_nanosleep)
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/arch-x86_64/syscalls/__clock_nanosleep.S b/libc/arch-x86_64/syscalls/___clock_nanosleep.S
similarity index 78%
rename from libc/arch-x86_64/syscalls/__clock_nanosleep.S
rename to libc/arch-x86_64/syscalls/___clock_nanosleep.S
index 37726c0..3286eb2 100644
--- a/libc/arch-x86_64/syscalls/__clock_nanosleep.S
+++ b/libc/arch-x86_64/syscalls/___clock_nanosleep.S
@@ -2,7 +2,7 @@
 
 #include <private/bionic_asm.h>
 
-ENTRY(__clock_nanosleep)
+ENTRY(___clock_nanosleep)
     movq    %rcx, %r10
     movl    $__NR_clock_nanosleep, %eax
     syscall
@@ -13,5 +13,5 @@
     call    __set_errno_internal
 1:
     ret
-END(__clock_nanosleep)
-.hidden __clock_nanosleep
+END(___clock_nanosleep)
+.hidden ___clock_nanosleep
diff --git a/libc/bionic/clock_nanosleep.cpp b/libc/bionic/clock_nanosleep.cpp
index 15b8fe7..8e2146f 100644
--- a/libc/bionic/clock_nanosleep.cpp
+++ b/libc/bionic/clock_nanosleep.cpp
@@ -30,9 +30,9 @@
 
 #include "private/ErrnoRestorer.h"
 
-extern "C" int __clock_nanosleep(clockid_t, int, const timespec*, timespec*);
+extern "C" int ___clock_nanosleep(clockid_t, int, const timespec*, timespec*);
 
 int clock_nanosleep(clockid_t clock_id, int flags, const timespec* in, timespec* out) {
   ErrnoRestorer errno_restorer;
-  return (__clock_nanosleep(clock_id, flags, in, out) == 0) ? 0 : errno;
+  return (___clock_nanosleep(clock_id, flags, in, out) == 0) ? 0 : errno;
 }