diff --git a/lib/bcoin/env.js b/lib/bcoin/env.js
index e96a2f12..8e4573ca 100644
--- a/lib/bcoin/env.js
+++ b/lib/bcoin/env.js
@@ -244,7 +244,7 @@ Environment.prototype.set = function set(options) {
     options.workerTimeout = +process.env.BCOIN_WORKER_TIMEOUT;
 
   if (options.debugFile && typeof options.debugFile !== 'string')
-    options.debugFile = options.prefix + '/debug.log'
+    options.debugFile = options.prefix + '/debug-' + options.network + '.log';
 
   this.prefix = options.prefix;
   this.networkType = options.network;