diff --git a/manager.js b/manager.js
index 7e3ff94..570b3c1 100644
--- a/manager.js
+++ b/manager.js
@@ -51,6 +51,8 @@ Manage.create = function(CONF) {
 
 			// act as a setter
 			Object.keys(conf).forEach(function(k) {
+				// challenges are either both overwritten, or not set
+				// this is as it should be
 				config.defaults[k] = conf[k];
 			});
 
@@ -122,6 +124,7 @@ Manage.create = function(CONF) {
 			//args.expiresBefore = Date.now() + 45 * 24 * 60 * 60 * 1000;
 			var issuedBefore = args.issuedBefore || Infinity;
 			var expiresBefore = args.expiresBefore || Infinity; //Date.now() + 21 * 24 * 60 * 60 * 1000;
+			var renewBefore = args.renewBefore || Infinity; //Date.now() + 21 * 24 * 60 * 60 * 1000;
 
 			// if there's anything to match, only return matches
 			// if there's nothing to match, return everything
@@ -144,6 +147,9 @@ Manage.create = function(CONF) {
 					if (site.issuedAt >= issuedBefore) {
 						return false;
 					}
+					if (site.renewAt >= renewBefore) {
+						return false;
+					}
 
 					// after attribute filtering, before cert filtering
 					if (matchAll) {
@@ -308,8 +314,8 @@ doctor.sites = function(config) {
 	if (!sites) {
 		sites = {};
 	}
-	if (Array.isArray(sites)) {
-		sites.forEach(function(site) {
+	if (Array.isArray(config.sites)) {
+		config.sites.forEach(function(site) {
 			sites[site.subject] = site;
 		});
 	}
diff --git a/package.json b/package.json
index 8f9cad0..524c400 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "greenlock-manager-fs",
-	"version": "3.0.0",
+	"version": "3.0.1",
 	"description": "A simple file-based management strategy for Greenlock",
 	"main": "manager.js",
 	"scripts": {
@@ -24,7 +24,9 @@
 	"license": "MPL-2.0",
 	"dependencies": {
 		"@root/mkdirp": "^1.0.0",
-		"safe-replace": "^1.1.0",
+		"safe-replace": "^1.1.0"
+	},
+	"devDependencies": {
 		"greenlock-manager-test": "^3.0.0"
 	}
 }