diff -urN aaa/euler-1.60/source/main.c euler-1.60/source/main.c
--- aaa/euler-1.60/source/main.c	2002-06-02 15:44:46.000000000 +0200
+++ euler-1.60/source/main.c	2003-06-29 18:21:01.000000000 +0200
@@ -38,6 +38,7 @@
 #include "metagtk.h"
 #include "metaps.h"
 #include "colbut.h"
+#include "version.h"
 
 /*-----------------------------------------------------------------------
  *	Global variables
@@ -1114,7 +1115,7 @@
 			break;
 		case E_DOC: {
 				char *browser;
-				browser = g_strconcat(prefs.browser," ",INSTALL_DIR,"/share/doc/euler/index.html &",NULL);
+				browser = g_strconcat(prefs.browser," ",INSTALL_DIR,"/share/doc/euler-",VERSION,"/index.html &",NULL);
 				system(browser);
 				g_free(browser);
 			}