diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index abd8764e83..e136b067cd 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -135,7 +135,8 @@ struct SysemuCPUOps;
  * @gdb_stop_before_watchpoint: Indicates whether GDB expects the CPU to stop
  *           before the insn which triggers a watchpoint rather than after it.
  * @gdb_arch_name: Optional callback that returns the architecture name known
- * to GDB. The caller must free the returned string with g_free.
+ * to GDB. The returned value is expected to be a simple constant string:
+ * the caller will not g_free() it.
  * @disas_set_info: Setup architecture specific components of disassembly info
  * @adjust_watchpoint_address: Perform a target-specific adjustment to an
  * address before attempting to match it against watchpoints.