diff --git a/src/base/debug/stack_trace_win.cc b/src/base/debug/stack_trace_win.cc
index f981bec6..16655d51 100644
--- a/src/base/debug/stack_trace_win.cc
+++ b/src/base/debug/stack_trace_win.cc
@@ -81,7 +81,7 @@ bool InitializeSymbols() {
   }
 
   wchar_t exe_path[MAX_PATH];
-  GetModuleFileName(nullptr, exe_path, MAX_PATH);
+  GetModuleFileNameW(nullptr, exe_path, MAX_PATH);
   std::wstring exe_path_wstring(exe_path);
   // To get the path without the filename, we just need to remove the final
   // slash and everything after it.
diff --git a/src/base/platform/platform-win32.cc b/src/base/platform/platform-win32.cc
index 11402689..b8cfb30d 100644
--- a/src/base/platform/platform-win32.cc
+++ b/src/base/platform/platform-win32.cc
@@ -802,13 +802,13 @@ void OS::EnsureWin32MemoryAPILoaded() {
   static bool loaded = false;
   if (!loaded) {
     VirtualAlloc2 = (VirtualAlloc2_t)GetProcAddress(
-        GetModuleHandle(L"kernelbase.dll"), "VirtualAlloc2");
+        GetModuleHandleW(L"kernelbase.dll"), "VirtualAlloc2");
 
     MapViewOfFile3 = (MapViewOfFile3_t)GetProcAddress(
-        GetModuleHandle(L"kernelbase.dll"), "MapViewOfFile3");
+        GetModuleHandleW(L"kernelbase.dll"), "MapViewOfFile3");
 
     UnmapViewOfFile2 = (UnmapViewOfFile2_t)GetProcAddress(
-        GetModuleHandle(L"kernelbase.dll"), "UnmapViewOfFile2");
+        GetModuleHandleW(L"kernelbase.dll"), "UnmapViewOfFile2");
 
     loaded = true;
   }
@@ -1097,7 +1097,7 @@ bool OS::DiscardSystemPages(void* address, size_t size) {
       reinterpret_cast<DiscardVirtualMemoryFunction>(-1))
     discard_virtual_memory =
         reinterpret_cast<DiscardVirtualMemoryFunction>(GetProcAddress(
-            GetModuleHandle(L"Kernel32.dll"), "DiscardVirtualMemory"));
+            GetModuleHandleW(L"Kernel32.dll"), "DiscardVirtualMemory"));
   // Use DiscardVirtualMemory when available because it releases faster than
   // MEM_RESET.
   DiscardVirtualMemoryFunction discard_function = discard_virtual_memory.load();
diff --git a/src/diagnostics/unwinding-info-win64.cc b/src/diagnostics/unwinding-info-win64.cc
index 1312609e..0290c5a0 100644
--- a/src/diagnostics/unwinding-info-win64.cc
+++ b/src/diagnostics/unwinding-info-win64.cc
@@ -473,7 +473,7 @@ static decltype(
 void LoadNtdllUnwindingFunctionsOnce() {
   // Load functions from the ntdll.dll module.
   HMODULE ntdll_module =
-      LoadLibraryEx(L"ntdll.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
+      LoadLibraryExW(L"ntdll.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
   DCHECK_NOT_NULL(ntdll_module);
 
   // This fails on Windows 7.