diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 715b070..66e221f 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -161,6 +161,7 @@
     { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
     { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
     { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
+    { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
     { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
     { ngx_null_string, 0 }
 };
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 34e6dd1..e8d3107 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -121,6 +121,7 @@
     { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
     { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
     { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
+    { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 },
     { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
     { ngx_null_string, 0 }
 };
diff --git a/src/http/modules/perl/ngx_http_perl_module.c b/src/http/modules/perl/ngx_http_perl_module.c
index 0a982e6..0bcad5c 100644
--- a/src/http/modules/perl/ngx_http_perl_module.c
+++ b/src/http/modules/perl/ngx_http_perl_module.c
@@ -692,10 +692,18 @@
 static void
 ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t *handler, SV **sv)
 {
-    if (ngx_strncmp(handler->data, "sub ", 4) == 0
-        || ngx_strncmp(handler->data, "use ", 4) == 0)
+    u_char  *p;
+
+    for (p = handler->data; *p; p++) {
+        if (*p != ' ' && *p != '\t' && *p != CR && *p != LF) {
+            break;
+        }
+    }
+
+    if (ngx_strncmp(p, "sub ", 4) == 0
+        || ngx_strncmp(p, "use ", 4) == 0)
     {
-        *sv = eval_pv((char *) handler->data, FALSE);
+        *sv = eval_pv((char *) p, FALSE);
 
         return;
     }