diff --git a/src/shrpx.cc b/src/shrpx.cc
index 52fbf0b1..e558ce81 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -370,11 +370,26 @@ void signal_cb(struct ev_loop *loop, ev_signal *w, int revents) {
 
 namespace {
 void worker_process_child_cb(struct ev_loop *loop, ev_child *w, int revents) {
+  std::string signalstr;
+  if (WIFSIGNALED(w->rstatus)) {
+    signalstr += ";signal ";
+    auto sig = WTERMSIG(w->rstatus);
+    auto s = strsignal(sig);
+    if (s) {
+      signalstr += s;
+      signalstr += "(";
+    } else {
+      signalstr += "UNKNOWN(";
+    }
+    signalstr += util::utos(sig);
+    signalstr += ")";
+  }
+
   LOG(NOTICE) << "Worker process (" << w->rpid << ") exited "
               << (WIFEXITED(w->rstatus) ? "normally" : "abnormally")
               << " with status " << std::hex << w->rstatus << std::oct
-              << "; exit status " << WEXITSTATUS(w->rstatus) << "; signal "
-              << (WIFSIGNALED(w->rstatus) ? WTERMSIG(w->rstatus) : 0);
+              << "; exit status " << WEXITSTATUS(w->rstatus)
+              << (signalstr.empty() ? "" : signalstr.c_str());
 
   ev_break(loop);
 }