diff --git a/README.md b/README.md
index 3fb25a2b..cebace46 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ gitui
 * [x] inspect diffs
 * [x] commit
 * [x] [input polling in thread](assets/perf_compare.jpg)
-* [ ] only ask git when necessary. maybe in a worker thread?
+* [x] only ask git when necessary. maybe in a worker thread?
 * [ ] show content of new files
 * [ ] discard untracked files (remove)
 * [ ] use [notify](https://crates.io/crates/notify) to watch git
diff --git a/src/app.rs b/src/app.rs
index b89c27b0..2bedc3a8 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -143,11 +143,11 @@ impl App {
 
         if !self.commit.is_visible() {
             if self.index.event(ev) {
-                self.update();
+                self.update_diff();
                 return;
             }
             if self.index_wd.event(ev) {
-                self.update();
+                self.update_diff();
                 return;
             }
             if self.diff.event(ev) {
@@ -318,7 +318,7 @@ impl App {
                 }
             };
 
-            self.update();
+            self.update_diff();
         }
     }