diff --git a/freeglut/freeglut/ChangeLog b/freeglut/freeglut/ChangeLog
index 1fac49c..72b5b5d 100644
--- a/freeglut/freeglut/ChangeLog
+++ b/freeglut/freeglut/ChangeLog
@@ -1070,4 +1070,12 @@ VisibilityNotify, so we have to handle the window status callback in the
 former case, too. This fixes bug #763442 (Call the visibility callback when
 minimizing a window).
 
+**************************************************************************
+* Changes on July 1, 2005.
+**************************************************************************
+
 (277) Removed redundant files from EXTRA_DIST.
+
+(278) MinGW is lacking a prototype for ChangeDisplaySettingsEx, so
+supply one in this case. Note that this should better be handled via
+autoconf than via cpp.
diff --git a/freeglut/freeglut/src/freeglut_internal.h b/freeglut/freeglut/src/freeglut_internal.h
index 185f9a4..f0c639c 100644
--- a/freeglut/freeglut/src/freeglut_internal.h
+++ b/freeglut/freeglut/src/freeglut_internal.h
@@ -62,6 +62,17 @@
 #include <TCHAR.H>
 #endif
 
+/* TODO: MinGW is lacking a prototype, this should better be handled via autoconf! */
+#ifndef ChangeDisplaySettingsEx
+LONG WINAPI ChangeDisplaySettingsExA(LPCSTR,LPDEVMODEA,HWND,DWORD,LPVOID);
+LONG WINAPI ChangeDisplaySettingsExW(LPCWSTR,LPDEVMODEW,HWND,DWORD,LPVOID);
+#ifdef UNICODE
+#define ChangeDisplaySettingsEx ChangeDisplaySettingsExW
+#else
+#define ChangeDisplaySettingsEx ChangeDisplaySettingsExA
+#endif
+#endif
+
 #if defined(_MSC_VER)
 #define strdup   _strdup
 #endif