diff --git a/windows/ChangeLog b/windows/ChangeLog
index 358cd4be..b7bfcd0f 100644
--- a/windows/ChangeLog
+++ b/windows/ChangeLog
@@ -1,3 +1,7 @@
+2006-03-09  Hrvoje Niksic  <hniksic@xemacs.org>
+
+	* config-compiler.h (HAVE_UINTPTR_T): Define to 1 under MinGW.
+
 2005-08-10  Hrvoje Niksic  <hniksic@xemacs.org>
 
 	* config.h (HAVE_SOCKADDR_IN6_SCOPE_ID): According to MSDN,
diff --git a/windows/config-compiler.h b/windows/config-compiler.h
index f0bcccc2..25c62eca 100644
--- a/windows/config-compiler.h
+++ b/windows/config-compiler.h
@@ -87,6 +87,7 @@ so, delete this exception statement from your version.  */
 #define HAVE__BOOL 1
 #undef SIZEOF_LONG_LONG		/* avoid redefinition warning */
 #define SIZEOF_LONG_LONG 8
+#define HAVE_UINTPTR_T 1
 
 #define HAVE_STRTOLL 1