diff --git a/lib/modules/console_listener/index.js b/lib/modules/console_listener/index.js
index 6b1aaf525..6d022fdf3 100644
--- a/lib/modules/console_listener/index.js
+++ b/lib/modules/console_listener/index.js
@@ -69,7 +69,7 @@ class ConsoleListener {
                     
                     this.logger.debug(`${name}.${functionName}(${paramString}) : ${transactionHash} | gas:${gasUsed} | blk:${blockNumber} | status:${status}`);
                 } else {
-                    this.logger.debug(request);
+                    this.logger.debug(JSON.stringify(request));
                 }
             });
         }