diff --git a/libc/src/unistd/linux/access.cpp b/libc/src/unistd/linux/access.cpp
--- a/libc/src/unistd/linux/access.cpp
+++ b/libc/src/unistd/linux/access.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/chdir.cpp b/libc/src/unistd/linux/chdir.cpp
--- a/libc/src/unistd/linux/chdir.cpp
+++ b/libc/src/unistd/linux/chdir.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/close.cpp b/libc/src/unistd/linux/close.cpp
--- a/libc/src/unistd/linux/close.cpp
+++ b/libc/src/unistd/linux/close.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/dup.cpp b/libc/src/unistd/linux/dup.cpp
--- a/libc/src/unistd/linux/dup.cpp
+++ b/libc/src/unistd/linux/dup.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/dup2.cpp b/libc/src/unistd/linux/dup2.cpp
--- a/libc/src/unistd/linux/dup2.cpp
+++ b/libc/src/unistd/linux/dup2.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/dup3.cpp b/libc/src/unistd/linux/dup3.cpp
--- a/libc/src/unistd/linux/dup3.cpp
+++ b/libc/src/unistd/linux/dup3.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/execv.cpp b/libc/src/unistd/linux/execv.cpp
--- a/libc/src/unistd/linux/execv.cpp
+++ b/libc/src/unistd/linux/execv.cpp
@@ -12,7 +12,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/execve.cpp b/libc/src/unistd/linux/execve.cpp
--- a/libc/src/unistd/linux/execve.cpp
+++ b/libc/src/unistd/linux/execve.cpp
@@ -12,7 +12,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/fchdir.cpp b/libc/src/unistd/linux/fchdir.cpp
--- a/libc/src/unistd/linux/fchdir.cpp
+++ b/libc/src/unistd/linux/fchdir.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/fork.cpp b/libc/src/unistd/linux/fork.cpp
--- a/libc/src/unistd/linux/fork.cpp
+++ b/libc/src/unistd/linux/fork.cpp
@@ -13,7 +13,7 @@
 #include "src/__support/threads/fork_callbacks.h"
 #include "src/__support/threads/thread.h" // For thread self object
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/fsync.cpp b/libc/src/unistd/linux/fsync.cpp
--- a/libc/src/unistd/linux/fsync.cpp
+++ b/libc/src/unistd/linux/fsync.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/ftruncate.cpp b/libc/src/unistd/linux/ftruncate.cpp
--- a/libc/src/unistd/linux/ftruncate.cpp
+++ b/libc/src/unistd/linux/ftruncate.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 #include <unistd.h>
 
diff --git a/libc/src/unistd/linux/getcwd.cpp b/libc/src/unistd/linux/getcwd.cpp
--- a/libc/src/unistd/linux/getcwd.cpp
+++ b/libc/src/unistd/linux/getcwd.cpp
@@ -12,8 +12,8 @@
 #include "src/__support/common.h"
 #include "src/string/allocating_string_utils.h" // For strdup.
 
+#include "src/errno/libc_errno.h"
 #include <linux/limits.h> // This is safe to include without any name pollution.
-#include <src/errno/libc_errno.h>
 #include <stdlib.h>
 #include <sys/syscall.h> // For syscall numbers.
 
diff --git a/libc/src/unistd/linux/isatty.cpp b/libc/src/unistd/linux/isatty.cpp
--- a/libc/src/unistd/linux/isatty.cpp
+++ b/libc/src/unistd/linux/isatty.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/ioctl.h>   // For ioctl numbers.
 #include <sys/syscall.h> // For syscall numbers.
 
diff --git a/libc/src/unistd/linux/linkat.cpp b/libc/src/unistd/linux/linkat.cpp
--- a/libc/src/unistd/linux/linkat.cpp
+++ b/libc/src/unistd/linux/linkat.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/pread.cpp b/libc/src/unistd/linux/pread.cpp
--- a/libc/src/unistd/linux/pread.cpp
+++ b/libc/src/unistd/linux/pread.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/pwrite.cpp b/libc/src/unistd/linux/pwrite.cpp
--- a/libc/src/unistd/linux/pwrite.cpp
+++ b/libc/src/unistd/linux/pwrite.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/read.cpp b/libc/src/unistd/linux/read.cpp
--- a/libc/src/unistd/linux/read.cpp
+++ b/libc/src/unistd/linux/read.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/readlink.cpp b/libc/src/unistd/linux/readlink.cpp
--- a/libc/src/unistd/linux/readlink.cpp
+++ b/libc/src/unistd/linux/readlink.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/readlinkat.cpp b/libc/src/unistd/linux/readlinkat.cpp
--- a/libc/src/unistd/linux/readlinkat.cpp
+++ b/libc/src/unistd/linux/readlinkat.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/symlinkat.cpp b/libc/src/unistd/linux/symlinkat.cpp
--- a/libc/src/unistd/linux/symlinkat.cpp
+++ b/libc/src/unistd/linux/symlinkat.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/syscall.cpp b/libc/src/unistd/linux/syscall.cpp
--- a/libc/src/unistd/linux/syscall.cpp
+++ b/libc/src/unistd/linux/syscall.cpp
@@ -11,7 +11,7 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
-#include <src/errno/libc_errno.h>
+#include "src/errno/libc_errno.h"
 #include <stdarg.h>
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/sysconf.cpp b/libc/src/unistd/linux/sysconf.cpp
--- a/libc/src/unistd/linux/sysconf.cpp
+++ b/libc/src/unistd/linux/sysconf.cpp
@@ -10,8 +10,8 @@
 
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <linux/param.h> // For EXEC_PAGESIZE.
-#include <src/errno/libc_errno.h>
 #include <unistd.h>
 
 namespace __llvm_libc {
diff --git a/libc/src/unistd/linux/unlink.cpp b/libc/src/unistd/linux/unlink.cpp
--- a/libc/src/unistd/linux/unlink.cpp
+++ b/libc/src/unistd/linux/unlink.cpp
@@ -11,8 +11,8 @@
 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
 #include "src/__support/common.h"
 
+#include "src/errno/libc_errno.h"
 #include <fcntl.h>
-#include <src/errno/libc_errno.h>
 #include <sys/syscall.h> // For syscall numbers.
 
 namespace __llvm_libc {