diff --git a/NEWS b/NEWS
index a9916b7e..038cb49e 100644
--- a/NEWS
+++ b/NEWS
@@ -10,6 +10,7 @@ NEWS
   * [mod_dirlisting] fix memory leak if pcre fails
   * [mod_fastcgi,mod_scgi] fix resource leaks on spawning backends
   * [mod_magnet] fix memory leak
+  * add comments for switch fall throughs
 
 - 1.4.34
   * [mod_auth] explicitly link ssl for SHA1 (fixes #2517)
diff --git a/src/connections.c b/src/connections.c
index 8a2774dc..130bcbbc 100644
--- a/src/connections.c
+++ b/src/connections.c
@@ -1477,6 +1477,7 @@ int connection_state_machine(server *srv, connection *con) {
 				break;
 			case HANDLER_COMEBACK:
 				done = -1;
+				/* fallthrough */
 			case HANDLER_WAIT_FOR_EVENT:
 				/* come back here */
 				connection_set_state(srv, con, CON_STATE_HANDLE_REQUEST);
diff --git a/src/mod_fastcgi.c b/src/mod_fastcgi.c
index e925b262..0e155531 100644
--- a/src/mod_fastcgi.c
+++ b/src/mod_fastcgi.c
@@ -3018,7 +3018,7 @@ static handler_t fcgi_write_request(server *srv, handler_ctx *hctx) {
 
 			break;
 		}
-
+		/* fallthrough */
 	case FCGI_STATE_PREPARE_WRITE:
 		/* ok, we have the connection */
 
diff --git a/src/request.c b/src/request.c
index 6bdaf578..5ee072dc 100644
--- a/src/request.c
+++ b/src/request.c
@@ -1023,6 +1023,7 @@ int http_request_parse(server *srv, connection *con) {
 			case '\t':
 				/* strip leading WS */
 				if (value == cur) value = cur+1;
+				/* fallthrough */
 			default:
 				if (*cur >= 0 && *cur < 32 && *cur != '\t') {
 					if (srv->srvconf.log_request_header_on_error) {