diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index 23e77cb..088660d 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2055,7 +2055,8 @@
     int64_t file_size, file_align;
 
     /* Just support these ram flags by now. */
-    assert((ram_flags & ~(RAM_SHARED | RAM_PMEM | RAM_NORESERVE)) == 0);
+    assert((ram_flags & ~(RAM_SHARED | RAM_PMEM | RAM_NORESERVE |
+                          RAM_PROTECTED)) == 0);
 
     if (xen_enabled()) {
         error_setg(errp, "-mem-path not supported with Xen");