diff --git a/src/mami.js/args.js b/src/mami.js/args.js
index 2cc6e95..4bf0ccc 100644
--- a/src/mami.js/args.js
+++ b/src/mami.js/args.js
@@ -28,8 +28,8 @@ const MamiArgs = (argName, input, builder) => {
             filter: undefined,
             constraint: undefined,
             fallback: undefined,
-            throw: true,
-            required: false,
+            throw: undefined,
+            required: undefined,
             min: undefined,
             max: undefined,
         };
@@ -79,6 +79,10 @@ const MamiArgs = (argName, input, builder) => {
             required: value => {
                 checkCreated();
                 info.required = value === undefined || value === true;
+
+                if(info.required && info.throw === undefined)
+                    info.throw = true;
+
                 return blueprint;
             },
             min: value => {