diff --git a/trunk/c5/test.cpp b/trunk/c5/test.cpp
index cd7f0e7a..09b86378 100644
--- a/trunk/c5/test.cpp
+++ b/trunk/c5/test.cpp
@@ -317,6 +317,10 @@ int CRYPTOPP_API main(int argc, char *argv[])
 			FileSource usage("usage.dat", true, new FileSink(cout));
 			return 1;
 		}
+		else if (command == "V")
+		{
+			cout << "5.4" << endl;
+		}
 		else
 		{
 			cerr << "Unrecognized command. Run \"cryptest h\" to obtain usage information.\n";
diff --git a/trunk/c5/usage.dat b/trunk/c5/usage.dat
index 8ea82e3f..044f18fe 100644
--- a/trunk/c5/usage.dat
+++ b/trunk/c5/usage.dat
@@ -74,5 +74,8 @@ Test Driver for Crypto++(R) Library, a C++ Class Library of Cryptographic Scheme
 - To run validation tests
 	cryptest v
 
+- To display version number
+       cryptest V
+
 - To run benchmarks
 	cryptest b [time for each benchmark in seconds]