diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 62fba5fcee..f92dbc2270 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -359,17 +359,17 @@ bool		ClientAuthInProgress = false;	/* T during new-client
 bool		redirection_done = false;	/* stderr redirected for syslogger? */
 
 /* received START_AUTOVAC_LAUNCHER signal */
-static volatile sig_atomic_t start_autovac_launcher = false;
+static bool start_autovac_launcher = false;
 
 /* the launcher needs to be signaled to communicate some condition */
-static volatile bool avlauncher_needs_signal = false;
+static bool avlauncher_needs_signal = false;
 
 /* received START_WALRECEIVER signal */
-static volatile sig_atomic_t WalReceiverRequested = false;
+static bool WalReceiverRequested = false;
 
 /* set when there's a worker that needs to be started up */
-static volatile bool StartWorkerNeeded = true;
-static volatile bool HaveCrashedWorker = false;
+static bool StartWorkerNeeded = true;
+static bool HaveCrashedWorker = false;
 
 /* set when signals arrive */
 static volatile sig_atomic_t pending_pm_pmsignal;