diff --git a/Contrib/VPatch/Readme.html b/Contrib/VPatch/Readme.html
index aa5f03e5..640d7ca7 100644
--- a/Contrib/VPatch/Readme.html
+++ b/Contrib/VPatch/Readme.html
@@ -98,7 +98,7 @@ a:hover
     <tr> 
       <td> 
         
-      <h1>VPatch 3.0</h1>
+      <h1>VPatch 3.1</h1>
         <div> 
           <h2>Introduction</h2>
           <div>
@@ -222,14 +222,23 @@ vpatch::vpatchfile "patch.pat" "oldfile.txt" "temporary_newfile.txt"
           <h3>Test framework (Python)</h3>
           <div>
             <p>Run the <i>VPatch_tests.py</i> script (if you have <a href="http://www.python.org">Python</a> 
-              installed) to perform basic functionality tests on VPatch.</p>
+              installed) to perform basic functionality tests on VPatch. The <i>testExtended</i> 
+              test is known to fail if a set of big test files is not installed, 
+              you can safely ignore this.</p>
           </div>
           </div>
           <h2>Version history</h2>
           <div>
           <ul>
-            <li>3.0
-<ul>
+            <li>3.1 
+              <ul>
+                <li>GenPat now compiles on POSIX platforms (MinGW/GCC), Visual 
+                  C++ 6 and Borland C++.</li>
+                <li>More test cases to verify functionality of GenPat.</li>
+              </ul>
+            </li>
+            <li>3.0 
+              <ul>
                 <li><b>Final</b>: Updates to the GUI, installer</li>
                 <li><b>RC8</b>: GenPat will now flag replacement of a patch (e.g. 
                   the source file has the same contents as a previous patch inside 
diff --git a/Contrib/VPatch/Source/GenPat/main.cpp b/Contrib/VPatch/Source/GenPat/main.cpp
index 7f0fa2c8..68d83a13 100644
--- a/Contrib/VPatch/Source/GenPat/main.cpp
+++ b/Contrib/VPatch/Source/GenPat/main.cpp
@@ -31,6 +31,12 @@
   #include <unistd.h>
 #endif
 
+#ifdef __WIN32__
+  #define OPT_CHAR '/'
+#else
+  #define OPT_CHAR '-'
+#endif
+
 #include "GlobalTypes.h"
 #include "POSIXUtil.h"
 #include "Checksums.h"
@@ -61,7 +67,7 @@ int main( int argc, char * argv[] ) {
     for(int i = 1; i < argc; i++) {
       string s(argv[i]);
       if(s.size() > 0) {
-        if(s[0] == '/') {
+        if(s[0] == OPT_CHAR) {
           if(s.size() > 1) {
             if((s[1] == 'v') || (s[1] == 'V')) {
               beVerbose = true;
@@ -117,13 +123,13 @@ int main( int argc, char * argv[] ) {
     cout << "  GENPAT (sourcefile) (targetfile) (patchfile)\n\n";
 
     cout << "Command line option (optional):\n";
-    cout << "/R        Replace a patch with same contents as source silently if it\n          already exists.\n";
-    cout << "/B=64     Set blocksize (default=64), multiple of 2 is required.\n";
-    cout << "/V        More verbose information during patch creation.\n";
-    cout << "/O        Deactivate match limit of the /A switch (sometimes smaller patches).\n";
-    cout << "/A=500    Maximum number of block matches per block (improves performance).\n";
-    cout << "          Default is 500, larger is slower. Use /V to see the cut-off aborts.\n\n";
-    cout << "Note: filenames should never start with / character!\n\n";
+    cout << OPT_CHAR << "R        Replace a patch with same contents as source silently if it\n          already exists.\n";
+    cout << OPT_CHAR << "B=64     Set blocksize (default=64), multiple of 2 is required.\n";
+    cout << OPT_CHAR << "V        More verbose information during patch creation.\n";
+    cout << OPT_CHAR << "O        Deactivate match limit of the " << OPT_CHAR << "A switch (sometimes smaller patches).\n";
+    cout << OPT_CHAR << "A=500    Maximum number of block matches per block (improves performance).\n";
+    cout << "          Default is 500, larger is slower. Use " << OPT_CHAR << "V to see the cut-off aborts.\n\n";
+    cout << "Note: filenames should never start with " << OPT_CHAR << " character!\n\n";
     cout << "Possible exit codes:\n";
     cout << "  0  Success\n";
     cout << "  1  Arguments missing\n";