diff --git a/src/support/ChangeLog b/src/support/ChangeLog
index a36fc7f82b..487246b617 100644
--- a/src/support/ChangeLog
+++ b/src/support/ChangeLog
@@ -1,3 +1,7 @@
+2005-01-05  Angus Leeming  <leeming@lyx.org>
+
+	* os_win32.C (external_path, internal_path): s/MAX_PATH/PATH_MAX/.
+
 2005-01-04  Angus Leeming  <leeming@lyx.org>
 
 	* os_win32.C (current_root): use _getdrive on Win32.
diff --git a/src/support/os_win32.C b/src/support/os_win32.C
index 7de1274f9f..b7c48ae1a4 100644
--- a/src/support/os_win32.C
+++ b/src/support/os_win32.C
@@ -132,7 +132,7 @@ string external_path(string const & p)
 #if defined(__CYGWIN__) || defined(__CYGWIN32__)
 	// Translate from cygwin path syntax to dos path syntax
 	if (is_absolute_path(p)) {
-		char dp[MAX_PATH];
+		char dp[PATH_MAX];
 		cygwin_conv_to_full_win32_path(p.c_str(), dp);
 		dos_path = !dp ? "" : dp;
 	}
@@ -160,7 +160,7 @@ string external_path(string const & p)
 string internal_path(string const & p)
 {
 #if defined(__CYGWIN__) || defined(__CYGWIN32__)
-	char posix_path[MAX_PATH];
+	char posix_path[PATH_MAX];
 	posix_path[0] = '\0';
 	cygwin_conv_to_posix_path(p.c_str(), posix_path);
 	return posix_path;