diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -336,7 +336,7 @@
     libc.src.pthread.pthread_setspecific
 
     # sched.h entrypoints
-    libc.src.sched.sched_getcpucount
+    libc.src.sched.__sched_getcpucount
 
     # stdio.h entrypoints
     libc.src.stdio.clearerr
diff --git a/libc/spec/llvm_libc_ext.td b/libc/spec/llvm_libc_ext.td
--- a/libc/spec/llvm_libc_ext.td
+++ b/libc/spec/llvm_libc_ext.td
@@ -40,7 +40,7 @@
       [], // Enumerations
       [
         FunctionSpec<
-            "sched_getcpucount",
+            "__sched_getcpucount",
             RetValSpec<IntType>,
             [ArgSpec<SizeTType>, ArgSpec<ConstCpuSetPtr>]
         >,
diff --git a/libc/src/sched/CMakeLists.txt b/libc/src/sched/CMakeLists.txt
--- a/libc/src/sched/CMakeLists.txt
+++ b/libc/src/sched/CMakeLists.txt
@@ -17,8 +17,8 @@
 )
 
 add_entrypoint_object(
-  sched_getcpucount
+  __sched_getcpucount
   ALIAS
   DEPENDS
-    .${LIBC_TARGET_OS}.sched_getcpucount
+    .${LIBC_TARGET_OS}.__sched_getcpucount
 )
diff --git a/libc/src/sched/linux/CMakeLists.txt b/libc/src/sched/linux/CMakeLists.txt
--- a/libc/src/sched/linux/CMakeLists.txt
+++ b/libc/src/sched/linux/CMakeLists.txt
@@ -25,7 +25,7 @@
 )
 
 add_entrypoint_object(
-  sched_getcpucount
+  __sched_getcpucount
   SRCS
     sched_getcpucount.cpp
   HDRS
diff --git a/libc/test/src/sched/CMakeLists.txt b/libc/test/src/sched/CMakeLists.txt
--- a/libc/test/src/sched/CMakeLists.txt
+++ b/libc/test/src/sched/CMakeLists.txt
@@ -28,6 +28,6 @@
     libc.include.sys_syscall
     libc.src.__support.OSUtil.osutil
     libc.src.sched.sched_getaffinity
-    libc.src.sched.sched_getcpucount
+    libc.src.sched.__sched_getcpucount
     libc.test.errno_setter_matcher
 )