diff --git a/lib/core/config.js b/lib/core/config.js
index bbc09cf2c..26743320c 100644
--- a/lib/core/config.js
+++ b/lib/core/config.js
@@ -153,6 +153,8 @@ Config.prototype.loadExternalContractsFiles = function() {
       this.contractsFiles.push(new File({filename: contract.file, type: "dapp_file", basedir: '', path: contract.file}));
     } else if (fs.existsSync(path.join('./node_modules/', contract.file))) {
       this.contractsFiles.push(new File({filename: path.join('./node_modules/', contract.file), type: "dapp_file", basedir: '', path: path.join('./node_modules/', contract.file)}));
+    } else {
+      this.logger.error("contract file not found: " + contract.file);
     }
   }
 };