diff --git a/src/basic/log.c b/src/basic/log.c
index 18a1ea0bdbf..1637a062d71 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -359,7 +359,7 @@ static int write_to_console(
         highlight = LOG_PRI(level) <= LOG_ERR && show_color;
 
         if (show_location) {
-                snprintf(location, sizeof(location), "(%s:%i) ", file, line);
+                xsprintf(location, "(%s:%i) ", file, line);
                 iovec[n++] = IOVEC_MAKE_STRING(location);
         }
 
@@ -798,7 +798,7 @@ static void log_assert(
                 return;
 
         DISABLE_WARNING_FORMAT_NONLITERAL;
-        snprintf(buffer, sizeof buffer, format, text, file, line, func);
+        xsprintf(buffer, format, text, file, line, func);
         REENABLE_WARNING;
 
         log_abort_msg = buffer;
diff --git a/src/core/job.c b/src/core/job.c
index 46defae1bc8..2ea7834dfd2 100644
--- a/src/core/job.c
+++ b/src/core/job.c
@@ -777,7 +777,7 @@ static void job_log_status_message(Unit *u, JobType t, JobResult result) {
 
         /* The description might be longer than the buffer, but that's OK, we'll just truncate it here */
         DISABLE_WARNING_FORMAT_NONLITERAL;
-        snprintf(buf, sizeof(buf), format, unit_description(u));
+        xsprintf(buf, format, unit_description(u));
         REENABLE_WARNING;
 
         switch (t) {
diff --git a/src/core/unit.c b/src/core/unit.c
index ae5b7b11f07..c419caef10e 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -1680,7 +1680,7 @@ static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) {
         format = unit_get_status_message_format(u, t);
 
         DISABLE_WARNING_FORMAT_NONLITERAL;
-        snprintf(buf, sizeof buf, format, unit_description(u));
+        xsprintf(buf, format, unit_description(u));
         REENABLE_WARNING;
 
         mid = t == JOB_START ? "MESSAGE_ID=" SD_MESSAGE_UNIT_STARTING_STR :
diff --git a/src/udev/collect/collect.c b/src/udev/collect/collect.c
index 7b5fdf50b7f..17e66166343 100644
--- a/src/udev/collect/collect.c
+++ b/src/udev/collect/collect.c
@@ -94,7 +94,7 @@ static int prepare(char *dir, char *filename)
         if (r < 0 && errno != EEXIST)
                 return -errno;
 
-        snprintf(buf, sizeof buf, "%s/%s", dir, filename);
+        xsprintf(buf, "%s/%s", dir, filename);
 
         fd = open(buf, O_RDWR|O_CREAT|O_CLOEXEC, S_IRUSR|S_IWUSR);
         if (fd < 0)
diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
index 803c33fea3b..f3be27fdd03 100644
--- a/src/udev/udev-builtin-net_id.c
+++ b/src/udev/udev-builtin-net_id.c
@@ -275,7 +275,7 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
                 goto out;
         }
 
-        snprintf(slots, sizeof slots, "%s/slots", udev_device_get_syspath(pci));
+        xsprintf(slots, "%s/slots", udev_device_get_syspath(pci));
         dir = opendir(slots);
         if (!dir) {
                 err = -errno;
@@ -294,7 +294,7 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
                 if (i < 1)
                         continue;
 
-                snprintf(str, sizeof str, "%s/%s/address", slots, dent->d_name);
+                xsprintf(str, "%s/%s/address", slots, dent->d_name);
                 if (read_one_line_file(str, &address) >= 0) {
                         /* match slot address with device by stripping the function */
                         if (strneq(address, udev_device_get_sysname(names->pcidev), strlen(address)))