diff --git a/configure.ac b/configure.ac
index f1349670c1..61c4baaa89 100644
--- a/configure.ac
+++ b/configure.ac
@@ -603,7 +603,7 @@ KRB4_LIBS=
 KRB5_LIBS=
 SASL_LIBS=
 TLS_LIBS=
-WITH_TLS_TYPE=
+WITH_TLS_TYPE=no
 MODULES_LIBS=
 SLAPI_LIBS=
 LIBSLAPI=