diff --git a/examples/h09server.cc b/examples/h09server.cc
index 4a057323618ee2fef3f667dcb430aedac47bba81..4681b84888b3e0ff0441abb2d2d1f9dc4939376c 100644
--- a/examples/h09server.cc
+++ b/examples/h09server.cc
@@ -1547,7 +1547,7 @@ int create_sock(Address &local_addr, const char *addr, const char *port,
   hints.ai_socktype = SOCK_DGRAM;
   hints.ai_flags = AI_PASSIVE;
 
-  if (strcmp("addr", "*") == 0) {
+  if (strcmp(addr, "*") == 0) {
     addr = nullptr;
   }