diff --git a/src/process.cc b/src/process.cc
index 73af08d1dba..5fe4810b8c5 100644
--- a/src/process.cc
+++ b/src/process.cc
@@ -473,7 +473,7 @@ Process::Kill (int sig)
   return kill(pid_, sig);
 }
 
-int
+void
 Process::MaybeShutdown (void)
 {
   if (STDOUT_CLOSED && STDERR_CLOSED && got_chld_) {
diff --git a/src/process.h b/src/process.h
index 42ca29e6fd8..951cf4d22c7 100644
--- a/src/process.h
+++ b/src/process.h
@@ -36,7 +36,7 @@ class Process : EventEmitter {
   static void OnWritable (EV_P_ ev_io *watcher, int revents);
   static void OnCHLD (EV_P_ ev_child *watcher, int revents);
 
-  int MaybeShutdown (void);
+  void MaybeShutdown (void);
   void Shutdown (void);
 
   ev_io stdout_watcher_;