diff --git a/Utils.cpp b/Utils.cpp
index 5a4fb499..d753618a 100644
--- a/Utils.cpp
+++ b/Utils.cpp
@@ -45,7 +45,10 @@ void CUtils::GenerateCert(FILE *pOut, bool bEncPrivKey) {
 	EVP_PKEY *pKey = NULL;
 	X509 *pCert = NULL;
 	X509_NAME *pName = NULL;
-	int serial = 0, days = 365;
+	int days = 365;
+
+	u_int iSeed = time( NULL );
+	int serial = ( rand_r( &iSeed ) % 9999 );
 
 	RSA *pRSA = RSA_generate_key(1024, 0x10001, NULL, NULL);
 	if( ( pKey = EVP_PKEY_new() ) ) {