diff --git a/src/lib_c/x86_64-windows-msvc/c/win_nt.cr b/src/lib_c/x86_64-windows-msvc/c/win_nt.cr
deleted file mode 100644
index ab7aa9256a48..000000000000
--- a/src/lib_c/x86_64-windows-msvc/c/win_nt.cr
+++ /dev/null
@@ -1,5 +0,0 @@
-lib LibC
-  alias LPSTR = Char*
-  alias LONG = Int32
-  alias WCHAR = UInt16
-end
diff --git a/src/lib_c/x86_64-windows-msvc/c/winbase.cr b/src/lib_c/x86_64-windows-msvc/c/winbase.cr
index 18586c8d5fa5..642a8ca8f1f0 100644
--- a/src/lib_c/x86_64-windows-msvc/c/winbase.cr
+++ b/src/lib_c/x86_64-windows-msvc/c/winbase.cr
@@ -1,4 +1,4 @@
-require "c/win_nt"
+require "c/winnt"
 require "c/win_def"
 require "c/int_safe"
 
diff --git a/src/lib_c/x86_64-windows-msvc/c/winnt.cr b/src/lib_c/x86_64-windows-msvc/c/winnt.cr
index f04045a0a791..25aea34a63c1 100644
--- a/src/lib_c/x86_64-windows-msvc/c/winnt.cr
+++ b/src/lib_c/x86_64-windows-msvc/c/winnt.cr
@@ -1,3 +1,9 @@
 lib LibC
   alias BOOLEAN = BYTE
+  alias LONG = Int32
+
+  alias CHAR = UChar
+  alias WCHAR = UInt16
+  alias LPSTR = CHAR*
+  alias LPWSTR = WCHAR*
 end