diff --git a/src/lib/modules/blockchain_process/simulator.js b/src/lib/modules/blockchain_process/simulator.js
index 4e2430d80..395edda49 100644
--- a/src/lib/modules/blockchain_process/simulator.js
+++ b/src/lib/modules/blockchain_process/simulator.js
@@ -29,7 +29,7 @@ class Simulator {
     cmds.push("-l " + (options.gasLimit || this.blockchainConfig.targetGasLimit || 8000000));
 
     // adding mnemonic only if it is defined in the blockchainConfig or options
-    const mnemonicAccount = this.blockchainConfig.accounts.find(acc => acc.mnemonic) || {};
+    const mnemonicAccount = this.blockchainConfig.accounts ? this.blockchainConfig.accounts.find(acc => acc.mnemonic) : {};
     const simulatorMnemonic = mnemonicAccount.mnemonic || options.simulatorMnemonic;
 
     if (simulatorMnemonic) {