diff --git a/src/libsystemd/sd-bus/bus-message.c b/src/libsystemd/sd-bus/bus-message.c
index ff0228081fe..5ac90223ffd 100644
--- a/src/libsystemd/sd-bus/bus-message.c
+++ b/src/libsystemd/sd-bus/bus-message.c
@@ -627,7 +627,7 @@ static int message_new_reply(
                         return r;
         }
 
-        t->dont_send = !!(call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED);
+        t->dont_send = FLAGS_SET(call->header->flags, BUS_MESSAGE_NO_REPLY_EXPECTED);
         t->enforced_reply_signature = call->enforced_reply_signature;
 
         /* let's copy the sensitive flag over. Let's do that as a safety precaution to keep a transaction
diff --git a/src/libsystemd/sd-bus/bus-socket.c b/src/libsystemd/sd-bus/bus-socket.c
index 3c59d0d6152..718709f0b24 100644
--- a/src/libsystemd/sd-bus/bus-socket.c
+++ b/src/libsystemd/sd-bus/bus-socket.c
@@ -217,7 +217,7 @@ static int bus_socket_auth_verify_client(sd_bus *b) {
         /* And possibly check the third line, too */
         if (b->accept_fd) {
                 l = lines[i++];
-                b->can_fds = !!memory_startswith(l, lines[i] - l, "AGREE_UNIX_FD");
+                b->can_fds = memory_startswith(l, lines[i] - l, "AGREE_UNIX_FD");
         }
 
         assert(i == n);
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 4a0259f8bbd..f036a49c644 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -321,7 +321,7 @@ _public_ int sd_bus_set_bus_client(sd_bus *bus, int b) {
         assert_return(!bus->patch_sender, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->bus_client = !!b;
+        bus->bus_client = b;
         return 0;
 }
 
@@ -331,7 +331,7 @@ _public_ int sd_bus_set_monitor(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->is_monitor = !!b;
+        bus->is_monitor = b;
         return 0;
 }
 
@@ -341,7 +341,7 @@ _public_ int sd_bus_negotiate_fds(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->accept_fd = !!b;
+        bus->accept_fd = b;
         return 0;
 }
 
@@ -353,7 +353,7 @@ _public_ int sd_bus_negotiate_timestamp(sd_bus *bus, int b) {
 
         /* This is not actually supported by any of our transports these days, but we do honour it for synthetic
          * replies, and maybe one day classic D-Bus learns this too */
-        bus->attach_timestamp = !!b;
+        bus->attach_timestamp = b;
 
         return 0;
 }
@@ -380,7 +380,7 @@ _public_ int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->is_server = !!b;
+        bus->is_server = b;
         bus->server_id = server_id;
         return 0;
 }
@@ -391,7 +391,7 @@ _public_ int sd_bus_set_anonymous(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->anonymous_auth = !!b;
+        bus->anonymous_auth = b;
         return 0;
 }
 
@@ -401,7 +401,7 @@ _public_ int sd_bus_set_trusted(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->trusted = !!b;
+        bus->trusted = b;
         return 0;
 }
 
@@ -419,7 +419,7 @@ _public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) {
         assert_return(bus = bus_resolve(bus), -ENOPKG);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->allow_interactive_authorization = !!b;
+        bus->allow_interactive_authorization = b;
         return 0;
 }
 
@@ -437,7 +437,7 @@ _public_ int sd_bus_set_watch_bind(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->watch_bind = !!b;
+        bus->watch_bind = b;
         return 0;
 }
 
@@ -455,7 +455,7 @@ _public_ int sd_bus_set_connected_signal(sd_bus *bus, int b) {
         assert_return(bus->state == BUS_UNSET, -EPERM);
         assert_return(!bus_origin_changed(bus), -ECHILD);
 
-        bus->connected_signal = !!b;
+        bus->connected_signal = b;
         return 0;
 }
 
diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
index 288798a0dcc..f18276c3f00 100644
--- a/src/libsystemd/sd-event/sd-event.c
+++ b/src/libsystemd/sd-event/sd-event.c
@@ -5038,7 +5038,7 @@ _public_ int sd_event_set_watchdog(sd_event *e, int b) {
                 }
         }
 
-        e->watchdog = !!b;
+        e->watchdog = b;
         return e->watchdog;
 
 fail: