diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 6575c49191..d5bb5cb5da 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -2415,7 +2415,9 @@ GList *ga_command_blacklist_init(GList *blacklist)
         const char *list[] = {
             "guest-suspend-disk", "guest-suspend-ram",
             "guest-suspend-hybrid", "guest-network-get-interfaces",
-            "guest-get-vcpus", "guest-set-vcpus", NULL};
+            "guest-get-vcpus", "guest-set-vcpus",
+            "guest-get-memory-blocks", "guest-set-memory-blocks",
+            "guest-get-memory-block-size", NULL};
         char **p = (char **)list;
 
         while (*p) {
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 990a8ddf53..0238fbbcad 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -710,6 +710,8 @@ GList *ga_command_blacklist_init(GList *blacklist)
         "guest-suspend-hybrid", "guest-network-get-interfaces",
         "guest-get-vcpus", "guest-set-vcpus",
         "guest-set-user-password",
+        "guest-get-memory-blocks", "guest-set-memory-blocks",
+        "guest-get-memory-block-size",
         "guest-fsfreeze-freeze-list", "guest-get-fsinfo",
         "guest-fstrim", NULL};
     char **p = (char **)list_unsupported;