diff --git a/src/core/iomgr/tcp_server_windows.c b/src/core/iomgr/tcp_server_windows.c
index 97f8fe41ea9..e6161eb1e86 100644
--- a/src/core/iomgr/tcp_server_windows.c
+++ b/src/core/iomgr/tcp_server_windows.c
@@ -38,16 +38,18 @@
 #define _GNU_SOURCE
 #include "src/core/iomgr/sockaddr_utils.h"
 
-#include "src/core/iomgr/pollset_windows.h"
-#include "src/core/iomgr/socket_windows.h"
-#include "src/core/iomgr/tcp_server.h"
-#include "src/core/iomgr/tcp_windows.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/log_win32.h>
 #include <grpc/support/sync.h>
 #include <grpc/support/time.h>
 
+#include "src/core/iomgr/iocp_windows.h"
+#include "src/core/iomgr/pollset_windows.h"
+#include "src/core/iomgr/socket_windows.h"
+#include "src/core/iomgr/tcp_server.h"
+#include "src/core/iomgr/tcp_windows.h"
+
 #define INIT_PORT_CAP 2
 #define MIN_SAFE_ACCEPT_QUEUE_SIZE 100
 
diff --git a/src/core/support/log_win32.c b/src/core/support/log_win32.c
index 4c0a866048f..840f24f68aa 100644
--- a/src/core/support/log_win32.c
+++ b/src/core/support/log_win32.c
@@ -35,12 +35,15 @@
 
 #ifdef GPR_WIN32
 
+#include <stdio.h>
+#include <stdarg.h>
+
+#include <grpc/support/alloc.h>
 #include <grpc/support/log_win32.h>
 #include <grpc/support/log.h>
-#include <grpc/support/alloc.h>
 #include <grpc/support/time.h>
-#include <stdio.h>
-#include <stdarg.h>
+
+#include "src/core/support/string_win32.h"
 
 void gpr_log(const char *file, int line, gpr_log_severity severity,
              const char *format, ...) {
@@ -93,25 +96,6 @@ void gpr_default_log(gpr_log_func_args *args) {
           args->file, args->line, args->message);
 }
 
-/* Arguable, this could become a public function. But hardly
- * anything beside the Windows implementation should use
- * it, so, never mind...*/
-#if defined UNICODE || defined _UNICODE
-static char *tchar_to_char(LPWSTR input) {
-  char *ret;
-  int needed = WideCharToMultiByte(CP_UTF8, 0, input, -1, NULL, 0, NULL, NULL);
-  if (needed == 0) return NULL;
-  ret = gpr_malloc(needed + 1);
-  WideCharToMultiByte(CP_UTF8, 0, input, -1, ret, needed, NULL, NULL);
-  ret[needed] = 0;
-  return ret;
-}
-#else
-static char *tchar_to_char(LPSTR input) {
-  return gpr_strdup(input);
-}
-#endif
-
 char *gpr_format_message(DWORD messageid) {
   LPTSTR tmessage;
   char *message;
@@ -121,7 +105,7 @@ char *gpr_format_message(DWORD messageid) {
                                NULL, messageid,
                                MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
                                (LPTSTR)(&tmessage), 0, NULL);
-  message = tchar_to_char(tmessage);
+  message = gpr_tchar_to_char(tmessage);
   LocalFree(tmessage);
   return message;
 }