diff --git a/src/lib_c/x86_64-windows-msvc/c/libloaderapi.cr b/src/lib_c/x86_64-windows-msvc/c/libloaderapi.cr
index 5612233553d9..67b114bfc80f 100644
--- a/src/lib_c/x86_64-windows-msvc/c/libloaderapi.cr
+++ b/src/lib_c/x86_64-windows-msvc/c/libloaderapi.cr
@@ -1,6 +1,6 @@
 require "c/winnt"
 
-@[Link("Kernel32")]
+@[Link("kernel32")]
 lib LibC
   alias FARPROC = Void*
 
diff --git a/src/lib_c/x86_64-windows-msvc/c/winsock2.cr b/src/lib_c/x86_64-windows-msvc/c/winsock2.cr
index 21ae8baba852..9a2dde0ca146 100644
--- a/src/lib_c/x86_64-windows-msvc/c/winsock2.cr
+++ b/src/lib_c/x86_64-windows-msvc/c/winsock2.cr
@@ -3,7 +3,7 @@ require "./basetsd"
 require "./guiddef"
 require "./winbase"
 
-@[Link("WS2_32")]
+@[Link("ws2_32")]
 lib LibC
   alias SOCKET = UINT_PTR