diff --git a/source-map-support.js b/source-map-support.js
index 2942b5e..d28bea7 100644
--- a/source-map-support.js
+++ b/source-map-support.js
@@ -497,7 +497,7 @@ function printErrorAndExit (error) {
   }
 
   console.error(error.stack);
-  globalProcessExit(1);
+  globalProcessExit(process.exitCode || 1);
 }
 
 function shimEmitUncaughtException () {