diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index fbf8fc630b..640ff6e3e7 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1912,6 +1912,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
 
     tcg_ctx->cpu = env_cpu(env);
     gen_intermediate_code(cpu, tb, max_insns);
+    assert(tb->size != 0);
     tcg_ctx->cpu = NULL;
     max_insns = tb->icount;