diff --git a/rc/index.d.ts b/rc/index.d.ts
index 113f9cdda2..9a2c6783f6 100644
--- a/rc/index.d.ts
+++ b/rc/index.d.ts
@@ -6,7 +6,8 @@
 declare function rc(
 	name: string,
 	defaults?: any,
-	argv?: string[] | null,
-	parse?: ((content: string) => any) | null): any;
+	argv?: {} | null,
+	parse?: ((content: string) => any) | null
+): any;
 
 export = rc;
\ No newline at end of file
diff --git a/rc/rc-tests.ts b/rc/rc-tests.ts
index 9b47bb18d4..9574bec339 100644
--- a/rc/rc-tests.ts
+++ b/rc/rc-tests.ts
@@ -1,16 +1,33 @@
 import rc = require("rc")
 
-let confA = rc("appname", {
+let confA = rc("appname1", {
     port: 2468,
-
     views: {
         engine: "jade"
     }
 });
 
-let appCfg = rc("appname", {}, null, function parse(s) {
+////////////////////
+
+let appCfg = rc("appname2", {}, null, function parse(s) {
     return JSON.parse(s.toLowerCase());
 });
+
 appCfg.configs[0];
 appCfg.configs[1];
-appCfg.config;
\ No newline at end of file
+appCfg.config;
+
+////////////////////
+
+let customArgv = rc("appname3", {
+    option: true
+},
+{
+    option: false,
+    envOption: 24,
+    argv: {
+        remain: [],
+        cooked: ['--no-option', '--envOption', '24'],
+        original: ['--no-option', '--envOption=24']
+    }
+});