diff --git a/Source/diablo.cpp b/Source/diablo.cpp
index 34c9a1e66..8ee962626 100644
--- a/Source/diablo.cpp
+++ b/Source/diablo.cpp
@@ -3,11 +3,6 @@
 #include "../DiabloUI/diabloui.h"
 #include <config.h>
 
-#ifdef _MSC_VER
-#define strcasecmp _stricmp
-#define strncasecmp _strnicmp
-#endif
-
 DEVILUTION_BEGIN_NAMESPACE
 
 HWND ghMainWnd;
diff --git a/SourceX/miniwin/misc.cpp b/SourceX/miniwin/misc.cpp
index 19a145d31..ac23c4fe5 100644
--- a/SourceX/miniwin/misc.cpp
+++ b/SourceX/miniwin/misc.cpp
@@ -8,11 +8,6 @@
 #include "DiabloUI/diabloui.h"
 #include "DiabloUI/dialogs.h"
 
-#ifdef _MSC_VER
-#define strcasecmp _stricmp
-#define strncasecmp _strnicmp
-#endif
-
 #if defined(USE_SDL1) && defined(RETROFW)
 #include <unistd.h>
 #endif
diff --git a/defs.h b/defs.h
index 7b730453e..789f6fd99 100644
--- a/defs.h
+++ b/defs.h
@@ -180,3 +180,8 @@
 #define SwapLE16 SDL_SwapLE16
 
 #define ErrSdl() ErrDlg("SDL Error", SDL_GetError(), __FILE__, __LINE__)
+
+#ifdef _MSC_VER
+#define strcasecmp _stricmp
+#define strncasecmp _strnicmp
+#endif