diff --git a/src/app.rs b/src/app.rs
index 3c63f29..6c0174c 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -57,6 +57,13 @@ impl SearchState {
             self.selected = self.results.len().saturating_sub(1);
         }
     }
+
+    pub fn toggle_all_selected(&mut self) {
+        let all_included = self.results.iter().all(|res| res.included);
+        self.results
+            .iter_mut()
+            .for_each(|res| res.included = !all_included);
+    }
 }
 
 #[derive(Debug, Eq, PartialEq)]
@@ -539,6 +546,11 @@ impl App {
                     .search_results_mut()
                     .toggle_selected_inclusion();
             }
+            (KeyCode::Char('a'), _) => {
+                self.current_screen
+                    .search_results_mut()
+                    .toggle_all_selected();
+            }
             (KeyCode::Enter, _) => {
                 if matches!(self.current_screen, Screen::SearchComplete(_)) {
                     if let Screen::SearchComplete(search_state) =
@@ -785,6 +797,97 @@ mod tests {
         rng.gen_range(1..10000)
     }
 
+    fn search_result(included: bool) -> SearchResult {
+        SearchResult {
+            path: Path::new("random/file").to_path_buf(),
+            line_number: random_num(),
+            line: "foo".to_owned(),
+            replacement: "bar".to_owned(),
+            included,
+            replace_result: None,
+        }
+    }
+
+    #[test]
+    fn test_toggle_all_selected_when_all_selected() {
+        let mut search_state = SearchState {
+            results: vec![
+                search_result(true),
+                search_result(true),
+                search_result(true),
+            ],
+            selected: 0,
+        };
+        search_state.toggle_all_selected();
+        assert_eq!(
+            search_state
+                .results
+                .iter()
+                .map(|res| res.included)
+                .collect::<Vec<_>>(),
+            vec![false, false, false]
+        );
+    }
+
+    #[test]
+    fn test_toggle_all_selected_when_none_selected() {
+        let mut search_state = SearchState {
+            results: vec![
+                search_result(false),
+                search_result(false),
+                search_result(false),
+            ],
+            selected: 0,
+        };
+        search_state.toggle_all_selected();
+        assert_eq!(
+            search_state
+                .results
+                .iter()
+                .map(|res| res.included)
+                .collect::<Vec<_>>(),
+            vec![true, true, true]
+        );
+    }
+
+    #[test]
+    fn test_toggle_all_selected_when_some_selected() {
+        let mut search_state = SearchState {
+            results: vec![
+                search_result(true),
+                search_result(false),
+                search_result(true),
+            ],
+            selected: 0,
+        };
+        search_state.toggle_all_selected();
+        assert_eq!(
+            search_state
+                .results
+                .iter()
+                .map(|res| res.included)
+                .collect::<Vec<_>>(),
+            vec![true, true, true]
+        );
+    }
+
+    #[test]
+    fn test_toggle_all_selected_when_no_results() {
+        let mut search_state = SearchState {
+            results: vec![],
+            selected: 0,
+        };
+        search_state.toggle_all_selected();
+        assert_eq!(
+            search_state
+                .results
+                .iter()
+                .map(|res| res.included)
+                .collect::<Vec<_>>(),
+            vec![] as Vec<bool>
+        );
+    }
+
     fn success_result() -> SearchResult {
         SearchResult {
             path: Path::new("random/file").to_path_buf(),
diff --git a/src/ui.rs b/src/ui.rs
index 62178c9..1e11369 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -449,13 +449,13 @@ pub fn render(app: &App, frame: &mut Frame<'_>) {
         }
         Screen::SearchProgressing(_) | Screen::SearchComplete(_) => {
             let mut keys = if let Screen::SearchComplete(_) = app.current_screen {
-                // TODO: actually prevent confirmation when search is in progress
                 vec!["<enter> replace"]
             } else {
                 vec![]
             };
             keys.append(&mut vec![
                 "<space> toggle",
+                "<a> toggle all",
                 "<j> down",
                 "<k> up",
                 "<C-o> back",