diff --git a/configure.ac b/configure.ac
index 4417512f0..a7fa1aace 100644
--- a/configure.ac
+++ b/configure.ac
@@ -296,6 +296,7 @@ AC_ARG_WITH(libpcap,
     ;;
   no)
     AC_MSG_WARN([YOU SAID NO...YOU SAID NO])
+    have_libpcap=no
    ;;
   *)
     AC_MSG_WARN([YOU SAID OTHER...YOU SAID OTHER])