diff --git a/lib/winston/profiler.js b/lib/winston/profiler.js
index 6533f6e9c..2a86c2e46 100644
--- a/lib/winston/profiler.js
+++ b/lib/winston/profiler.js
@@ -25,7 +25,7 @@ module.exports = class Profiler {
       throw new Error('Logger is required for profiling.');
     }
 
-    if (logger instanceof Logger.constructor){
+    if (logger instanceof Logger.constructor) {
       this.logger = logger;
       this.start = Date.now();
     } else {