diff --git a/src/login/user-runtime-dir.c b/src/login/user-runtime-dir.c
index 575f8ebfa0..b242f83429 100644
--- a/src/login/user-runtime-dir.c
+++ b/src/login/user-runtime-dir.c
@@ -25,27 +25,38 @@
 #include "strv.h"
 #include "user-util.h"
 
-static int acquire_runtime_dir_properties(uint64_t *size, uint64_t *inodes) {
+static int acquire_runtime_dir_properties(uint64_t *ret_size, uint64_t *ret_inodes) {
         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        uint64_t size, inodes;
         int r;
 
+        assert(ret_size);
+        assert(ret_inodes);
+
         r = sd_bus_default_system(&bus);
         if (r < 0)
                 return log_error_errno(r, "Failed to connect to system bus: %m");
 
-        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectorySize", &error, 't', size);
+        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectorySize", &error, 't', &size);
         if (r < 0) {
                 log_warning_errno(r, "Failed to acquire runtime directory size, ignoring: %s", bus_error_message(&error, r));
-                *size = physical_memory_scale(10U, 100U); /* 10% */
+                sd_bus_error_free(&error);
+
+                size = physical_memory_scale(10U, 100U); /* 10% */
         }
 
-        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectoryInodesMax", &error, 't', inodes);
+        r = bus_get_property_trivial(bus, bus_login_mgr, "RuntimeDirectoryInodesMax", &error, 't', &inodes);
         if (r < 0) {
                 log_warning_errno(r, "Failed to acquire number of inodes for runtime directory, ignoring: %s", bus_error_message(&error, r));
-                *inodes = DIV_ROUND_UP(*size, 4096);
+                sd_bus_error_free(&error);
+
+                inodes = DIV_ROUND_UP(size, 4096);
         }
 
+        *ret_size = size;
+        *ret_inodes = inodes;
+
         return 0;
 }
 
@@ -70,7 +81,7 @@ static int user_mkdir_runtime_path(
         if (path_is_mount_point(runtime_path) > 0)
                 log_debug("%s is already a mount point", runtime_path);
         else {
-                char options[sizeof("mode=0700,uid=,gid=,size=,nr_inodes=,smackfsroot=*")
+                char options[STRLEN("mode=0700,uid=,gid=,size=,nr_inodes=,smackfsroot=*")
                              + DECIMAL_STR_MAX(uid_t)
                              + DECIMAL_STR_MAX(gid_t)
                              + DECIMAL_STR_MAX(uint64_t)
@@ -140,7 +151,7 @@ static int user_remove_runtime_path(const char *runtime_path) {
 }
 
 static int do_mount(const char *user) {
-        char runtime_path[sizeof("/run/user") + DECIMAL_STR_MAX(uid_t)];
+        char runtime_path[STRLEN("/run/user/") + DECIMAL_STR_MAX(uid_t)];
         uint64_t runtime_dir_size, runtime_dir_inodes;
         uid_t uid;
         gid_t gid;
@@ -165,7 +176,7 @@ static int do_mount(const char *user) {
 }
 
 static int do_umount(const char *user) {
-        char runtime_path[sizeof("/run/user") + DECIMAL_STR_MAX(uid_t)];
+        char runtime_path[STRLEN("/run/user/") + DECIMAL_STR_MAX(uid_t)];
         uid_t uid;
         int r;