diff --git a/lib/utils/build-safe-sonic-boom.js b/lib/utils/build-safe-sonic-boom.js
index fadfe29..2e3ac93 100644
--- a/lib/utils/build-safe-sonic-boom.js
+++ b/lib/utils/build-safe-sonic-boom.js
@@ -22,9 +22,6 @@ function buildSafeSonicBoom (opts) {
   if (!process.env.NODE_V8_COVERAGE && !opts.sync && isMainThread) {
     setupOnExit(stream)
   }
-  if (!opts.sync && isMainThread) {
-    setupOnExit(stream)
-  }
   return stream
 
   function filterBrokenPipe (err) {