diff --git a/std/src/sys/pal/windows/c.rs b/std/src/sys/pal/windows/c.rs
index da96858d68691..97fec6e59f0bd 100644
--- a/std/src/sys/pal/windows/c.rs
+++ b/std/src/sys/pal/windows/c.rs
@@ -28,8 +28,6 @@ pub type LPCVOID = *const c_void;
 pub type LPOVERLAPPED = *mut OVERLAPPED;
 pub type LPSECURITY_ATTRIBUTES = *mut SECURITY_ATTRIBUTES;
 pub type LPVOID = *mut c_void;
-pub type LPWCH = *mut WCHAR;
-pub type LPWSTR = *mut WCHAR;
 
 #[cfg(target_vendor = "win7")]
 pub type PSRWLOCK = *mut SRWLOCK;
diff --git a/std/src/sys/pal/windows/os.rs b/std/src/sys/pal/windows/os.rs
index 542fabcb66556..ed7911b99cbd1 100644
--- a/std/src/sys/pal/windows/os.rs
+++ b/std/src/sys/pal/windows/os.rs
@@ -81,7 +81,7 @@ pub fn error_string(mut errnum: i32) -> String {
 }
 
 pub struct Env {
-    base: c::LPWCH,
+    base: *mut c::WCHAR,
     iter: EnvIterator,
 }
 
@@ -126,7 +126,7 @@ impl Iterator for Env {
 }
 
 #[derive(Clone)]
-struct EnvIterator(c::LPWCH);
+struct EnvIterator(*mut c::WCHAR);
 
 impl Iterator for EnvIterator {
     type Item = (OsString, OsString);
diff --git a/std/src/sys/pal/windows/stdio.rs b/std/src/sys/pal/windows/stdio.rs
index 10aeeac07ea2e..995be689b4671 100644
--- a/std/src/sys/pal/windows/stdio.rs
+++ b/std/src/sys/pal/windows/stdio.rs
@@ -182,12 +182,12 @@ fn write_valid_utf8_to_console(handle: c::HANDLE, utf8: &str) -> io::Result<usiz
         // Note that this theoretically checks validity twice in the (most common) case
         // where the underlying byte sequence is valid utf-8 (given the check in `write()`).
         let result = c::MultiByteToWideChar(
-            c::CP_UTF8,                      // CodePage
-            c::MB_ERR_INVALID_CHARS,         // dwFlags
-            utf8.as_ptr(),                   // lpMultiByteStr
-            utf8.len() as c::c_int,          // cbMultiByte
-            utf16.as_mut_ptr() as c::LPWSTR, // lpWideCharStr
-            utf16.len() as c::c_int,         // cchWideChar
+            c::CP_UTF8,                          // CodePage
+            c::MB_ERR_INVALID_CHARS,             // dwFlags
+            utf8.as_ptr(),                       // lpMultiByteStr
+            utf8.len() as c::c_int,              // cbMultiByte
+            utf16.as_mut_ptr() as *mut c::WCHAR, // lpWideCharStr
+            utf16.len() as c::c_int,             // cchWideChar
         );
         assert!(result != 0, "Unexpected error in MultiByteToWideChar");