diff --git a/src/http/ngx_http_file_cache.c b/src/http/ngx_http_file_cache.c
index 6d94c50..eacca59 100644
--- a/src/http/ngx_http_file_cache.c
+++ b/src/http/ngx_http_file_cache.c
@@ -875,6 +875,8 @@
 
     c = r->cache;
 
+    ngx_memzero(h, sizeof(ngx_http_file_cache_header_t));
+
     h->valid_sec = c->valid_sec;
     h->last_modified = c->last_modified;
     h->date = c->date;
diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
index dfdfae0..f937fb6 100644
--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -355,6 +355,8 @@
 
     ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start worker processes");
 
+    ngx_memzero(&ch, sizeof(ngx_channel_t));
+
     ch.command = NGX_CMD_OPEN_CHANNEL;
 
     for (i = 0; i < n; i++) {
@@ -401,6 +403,8 @@
                       &ngx_cache_manager_ctx, "cache manager process",
                       respawn ? NGX_PROCESS_JUST_RESPAWN : NGX_PROCESS_RESPAWN);
 
+    ngx_memzero(&ch, sizeof(ngx_channel_t));
+
     ch.command = NGX_CMD_OPEN_CHANNEL;
     ch.pid = ngx_processes[ngx_process_slot].pid;
     ch.slot = ngx_process_slot;
@@ -460,6 +464,8 @@
     ngx_err_t      err;
     ngx_channel_t  ch;
 
+    ngx_memzero(&ch, sizeof(ngx_channel_t));
+
 #if (NGX_BROKEN_SCM_RIGHTS)
 
     ch.command = 0;
@@ -561,6 +567,8 @@
     ngx_channel_t     ch;
     ngx_core_conf_t  *ccf;
 
+    ngx_memzero(&ch, sizeof(ngx_channel_t));
+
     ch.command = NGX_CMD_CLOSE_CHANNEL;
     ch.fd = -1;