diff --git a/src/pdf2htmlEX.cc b/src/pdf2htmlEX.cc
index 9c7282c..257eba5 100644
--- a/src/pdf2htmlEX.cc
+++ b/src/pdf2htmlEX.cc
@@ -1,6 +1,6 @@
 // pdf2htmlEX.cc
 //
-// Copyright (C) 2012,2013 Lu Wang <coolwanglu@gmail.com>
+// Copyright (C) 2012-2014 Lu Wang <coolwanglu@gmail.com>
 
 #include <cstdio>
 #include <cstdlib>
@@ -56,7 +56,7 @@ void show_usage_and_exit(const char * dummy = nullptr)
 void show_version_and_exit(const char * dummy = nullptr)
 {
     cerr << "pdf2htmlEX version " << PDF2HTMLEX_VERSION << endl;
-    cerr << "Copyright 2012,2013 Lu Wang <coolwanglu@gmail.com> and other contributers" << endl;
+    cerr << "Copyright 2012-2014 Lu Wang <coolwanglu@gmail.com> and other contributers" << endl;
     cerr << "Libraries: " << endl;
     cerr << "  poppler " << POPPLER_VERSION << endl;
     cerr << "  libfontforge " << ffw_get_version() << endl;
@@ -75,6 +75,14 @@ void show_version_and_exit(const char * dummy = nullptr)
     cerr << " svg";
 #endif
     cerr << endl;
+
+    // TODO: define constants
+    if(ffw_get_version() < 20130101LL) 
+    {
+        cerr << endl 
+             << "Warning: pdf2htmlEX has been built with a too old version of Fontforge, which is not supported." << endl;
+    }
+    
     cerr << endl;
     exit(EXIT_SUCCESS);
 }