diff --git a/lib/internal/process/warning.js b/lib/internal/process/warning.js
index 383bbd7e0fe79f..ebf4c932fa9c57 100644
--- a/lib/internal/process/warning.js
+++ b/lib/internal/process/warning.js
@@ -55,7 +55,7 @@ function writeToFile(message) {
 }
 
 function doEmitWarning(warning) {
-  return () => process.emit('warning', warning);
+  process.emit('warning', warning);
 }
 
 let traceWarningHelperShown = false;
@@ -129,7 +129,7 @@ function emitWarning(warning, type, code, ctor) {
     if (process.throwDeprecation)
       throw warning;
   }
-  process.nextTick(doEmitWarning(warning));
+  process.nextTick(doEmitWarning, warning);
 }
 
 function emitWarningSync(warning) {