diff --git a/test.cpp b/test.cpp
index dbde50c2..dc442713 100644
--- a/test.cpp
+++ b/test.cpp
@@ -152,8 +152,9 @@ int CRYPTOPP_API main(int argc, char *argv[])
 		std::string seed = IntToString(time(NULL));
 		seed.resize(16, ' ');
 
-		OFB_Mode<AES>::Encryption& prng = dynamic_cast<OFB_Mode<AES>::Encryption&>(GlobalRNG());
-		prng.SetKeyWithIV((byte *)seed.data(), 16, (byte *)seed.data());
+		// Fetch the SymmetricCipher interface, not the RandomNumberGenerator interface, to key the underlying cipher
+		OFB_Mode<AES>::Encryption& aesg = dynamic_cast<OFB_Mode<AES>::Encryption&>(GlobalRNG());
+		aesg.SetKeyWithIV((byte *)seed.data(), 16, (byte *)seed.data());
 
 		std::string command, executableName, macFilename;