diff --git a/sgxwall.cpp b/sgxwall.cpp
index 5ebbd29e..50cc5421 100644
--- a/sgxwall.cpp
+++ b/sgxwall.cpp
@@ -180,7 +180,9 @@ int main(int argc, char *argv[]) {
 
     initAll(enclaveLogLevel, checkClientCertOption, autoSignClientCertOption);
 
-    if (generateTestKeys) {
+    ifstream is("sgx_data/4node.json");
+
+    if (generateTestKeys && !is.good()) {
 
         cerr << "Generating test keys ..." << endl;
 
@@ -197,6 +199,7 @@ int main(int argc, char *argv[]) {
 
         SGXWallet::serializeKeys(ecdsaKeyNames, blsKeyNames, "sgx_data/4node.json");
 
+
         schainID = 2;
         dkgID = 2;