diff --git a/src/os/unix/ngx_process.c b/src/os/unix/ngx_process.c
index 685b0d1..b660d8b 100644
--- a/src/os/unix/ngx_process.c
+++ b/src/os/unix/ngx_process.c
@@ -70,6 +70,7 @@
                                       (respawn == NGX_PROCESS_RESPAWN) ? 1 : 0;
     ngx_processes[ngx_last_process].detached =
                                      (respawn == NGX_PROCESS_DETACHED) ? 1 : 0;
+    ngx_processes[ngx_last_process].signal = 0;
     ngx_processes[ngx_last_process].exited = 0;
     ngx_processes[ngx_last_process].exiting = 0;
     ngx_last_process++;
@@ -118,7 +119,7 @@
 
     for (i = 0; i < ngx_last_process; i++) {
 
-        if (ngx_processes[i].detached) {
+        if (!ngx_processes[i].signal) {
             continue;
         }
 
diff --git a/src/os/unix/ngx_process.h b/src/os/unix/ngx_process.h
index d8727c3..a71f682 100644
--- a/src/os/unix/ngx_process.h
+++ b/src/os/unix/ngx_process.h
@@ -16,8 +16,9 @@
 
     unsigned            respawn:1;
     unsigned            detached:1;
-    unsigned            exited:1;
+    unsigned            signal:1;
     unsigned            exiting:1;
+    unsigned            exited:1;
 } ngx_process_t;