diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c
index 5a0d80f..0966422 100644
--- a/target/ppc/mmu-hash64.c
+++ b/target/ppc/mmu-hash64.c
@@ -1188,7 +1188,7 @@
         return;
     }
 
-    cpu->hash64_opts = g_memdup(pcc->hash64_opts, sizeof(*cpu->hash64_opts));
+    cpu->hash64_opts = g_memdup2(pcc->hash64_opts, sizeof(*cpu->hash64_opts));
 }
 
 void ppc_hash64_finalize(PowerPCCPU *cpu)