diff --git a/hw/net/i82596.c b/hw/net/i82596.c
index 6cc8292a65..cd416a00ff 100644
--- a/hw/net/i82596.c
+++ b/hw/net/i82596.c
@@ -282,7 +282,7 @@ static void command_loop(I82596State *s)
         case CmdDump:
         case CmdDiagnose:
             printf("FIXME Command %d !!\n", cmd & 7);
-            assert(0);
+            g_assert_not_reached();
         }
 
         /* update status */