diff --git a/bleeding.js b/bleeding.js
index 6501246..359a94f 100644
--- a/bleeding.js
+++ b/bleeding.js
@@ -78,6 +78,7 @@ export default class Bleeding extends Component {
             })
             navigate('dayView', { cycleDay: day })
           }}
+          disabled={ this.state.currentValue === -1 }
           title="Save">
         </Button>
       </View>