diff --git a/ares/nameser.h b/ares/nameser.h
index a2e8e3731567deca1fb64d6445bb3e232ad38189..34f8dab32c9b3c69a03cf03902ded2f1a12e53a4 100644
--- a/ares/nameser.h
+++ b/ares/nameser.h
@@ -32,7 +32,7 @@ struct iovec
 int ares_writev (SOCKET s, const struct iovec *vector, size_t count);
 #define writev(s,vect,count)  ares_writev(s,vect,count)
 
-#ifndef HAVE_STRUCT_TIMEVAL
+#ifndef HAVE_GETTIMEOFDAY
 struct timezone { int dummy; };
 #endif