diff --git a/src/backend/replication/walsender.c b/src/backend/replication/walsender.c
index 2a16888b0f..5c40a1ef1b 100644
--- a/src/backend/replication/walsender.c
+++ b/src/backend/replication/walsender.c
@@ -47,6 +47,7 @@
 #include "storage/fd.h"
 #include "storage/ipc.h"
 #include "storage/pmsignal.h"
+#include "storage/proc.h"
 #include "tcop/tcopprot.h"
 #include "utils/guc.h"
 #include "utils/memutils.h"
@@ -844,7 +845,7 @@ WalSndSignals(void)
 	pqsignal(SIGINT, SIG_IGN);	/* not used */
 	pqsignal(SIGTERM, WalSndShutdownHandler);	/* request shutdown */
 	pqsignal(SIGQUIT, WalSndQuickDieHandler);	/* hard crash time */
-	pqsignal(SIGALRM, SIG_IGN);
+	pqsignal(SIGALRM, handle_sig_alarm);
 	pqsignal(SIGPIPE, SIG_IGN);
 	pqsignal(SIGUSR1, SIG_IGN); /* not used */
 	pqsignal(SIGUSR2, WalSndLastCycleHandler);	/* request a last cycle and