diff --git a/src/signal.c b/src/signal.c
index 1bb60eb82..9dfb5dc4b 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -106,6 +106,13 @@ static void signal_init()
 {
 	int sig;
 
+	/* Need to register the handler for SIGINT explicitly, as we can be
+	 * laucned within the subshell and at background:
+	 * $ (./haproxy -f env4.cfg &). According to POSIX standard
+	 * (2.11. Signals and Error Handling), we will inherit from the subshell
+	 * in this case SIG_IGN signal handler for SIGINT and SIGQUIT.
+	 */
+	signal(SIGINT, SIG_DFL);
 	signal_queue_len = 0;
 	memset(signal_queue, 0, sizeof(signal_queue));
 	memset(signal_state, 0, sizeof(signal_state));