diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 426c1b3c..bd846808 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -35,7 +35,6 @@ set(WOOF_SOURCES
     i_main.c
     i_oplmusic.c
     i_sdlmusic.c
-    i_winmusic.c
     i_sound.c              i_sound.h
     i_system.c             i_system.h
     i_timer.c              i_timer.h
@@ -123,6 +122,7 @@ list(APPEND WOOF_LIBRARIES textscreen)
 if(WIN32)
     list(APPEND
         WOOF_SOURCES
+        i_winmusic.c
         ../win32/win_version.c ../win32/win_version.h)
     if(MSVC)
         list(APPEND
diff --git a/src/i_winmusic.c b/src/i_winmusic.c
index d5d2d64c..91f4fe8c 100644
--- a/src/i_winmusic.c
+++ b/src/i_winmusic.c
@@ -14,9 +14,8 @@
 // DESCRIPTION:
 //      Windows native MIDI
 
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
 
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <mmsystem.h>
 #include <stdio.h>
@@ -597,7 +596,3 @@ music_module_t music_win_module =
     I_WIN_StopSong,
     I_WIN_UnRegisterSong,
 };
-
-#else
-enum {dummy};
-#endif
diff --git a/win32/win_version.c b/win32/win_version.c
index 06bcde49..bfa9b09a 100644
--- a/win32/win_version.c
+++ b/win32/win_version.c
@@ -15,11 +15,9 @@
 //      Check Windows version
 //
 
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-
 #include "win_version.h"
 
+#define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <stdlib.h>
 
@@ -51,5 +49,3 @@ int I_CheckWindows11(void)
 
     return 0;
 }
-
-#endif