diff --git a/common/SigUtil.cpp b/common/SigUtil.cpp
index fc16839c9e9c..e8856a3d91a5 100644
--- a/common/SigUtil.cpp
+++ b/common/SigUtil.cpp
@@ -179,7 +179,7 @@ void requestShutdown()
                 return std::make_pair(ret, WTERMSIG(status));
             }
         }
-        else if (pid > 0)
+        else if (pid > 0 && ::kill(pid, 0) == 0) // Don't complain if the process is reaped already.
         {
             // Log errno if we had a child pid we expected to reap.
             LOG_WRN("Failed to reap child process " << pid << " (" << Util::symbolicErrno(errno)