diff --git a/src/libsystemd/sd-bus/bus-creds.c b/src/libsystemd/sd-bus/bus-creds.c
index 1c6c5a545a..9e93712bfd 100644
--- a/src/libsystemd/sd-bus/bus-creds.c
+++ b/src/libsystemd/sd-bus/bus-creds.c
@@ -1060,7 +1060,7 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, PidRef *pidref, pid_t tid
                 const char *p;
 
                 p = procfs_file_alloca(pidref->pid, "cmdline");
-                r = read_full_virtual_file(p, &c->cmdline, &c->cmdline_size);
+                r = read_full_file(p, &c->cmdline, &c->cmdline_size);
                 if (r == -ENOENT)
                         return -ESRCH;
                 if (r < 0) {