diff --git a/README.md b/README.md
index 904a7c7..26bf827 100644
--- a/README.md
+++ b/README.md
@@ -170,10 +170,9 @@ next_tab = "ALT+SHIFT+L"
 open_font_selector = "ALT+T"
 open_scrollback = "ALT+S"
 create_worktree = "ALT+W"
-pane_sync_start = "ALT+Y"
+pane_sync_toggle = "ALT+Y"
 pane_sync_select = "SPACE"
 pane_sync_commit = "ALT+SHIFT+Y"
-pane_sync_end = "ALT+U"
 paste = "CTRL+SHIFT+V"
 ```
 
@@ -192,11 +191,10 @@ paste = "CTRL+SHIFT+V"
 - `Alt+s`: open the active pane scrollback in `$EDITOR`
 - `Alt+w`: edit a worktree name, then run `git worktree add <relative_worktree_path>/<name>`
   from the previously focused pane's working directory
-- `Alt+y`: enter pane-sync selection mode
+- `Alt+y`: enter pane-sync selection mode, cancel selection mode, or stop an active pane sync
 - `Space`: toggle the focused pane in the sync set while pane-sync selection mode is active
 - `Alt+Shift+y`: commit the current pane-sync selection; input typed or pasted into any synced
   pane is mirrored to the other synced panes
-- `Alt+u`: end pane sync
 - `Ctrl+Shift+v`: paste
 - Font default: `JetBrainsMono Nerd Font`
 - Kitty graphics protocol parsing is enabled by default
diff --git a/config.example.toml b/config.example.toml
index ddde5f3..e1a0211 100644
--- a/config.example.toml
+++ b/config.example.toml
@@ -41,8 +41,7 @@ next_tab = "ALT+SHIFT+L"
 open_font_selector = "ALT+T"
 open_scrollback = "ALT+S"
 create_worktree = "ALT+W"
-pane_sync_start = "ALT+Y"
+pane_sync_toggle = "ALT+Y"
 pane_sync_select = "SPACE"
 pane_sync_commit = "ALT+SHIFT+Y"
-pane_sync_end = "ALT+U"
 paste = "CTRL+SHIFT+V"
diff --git a/src/main/java/com/gregor/jprototerm/AppConfig.java b/src/main/java/com/gregor/jprototerm/AppConfig.java
index 6e1e3b3..016e2ad 100644
--- a/src/main/java/com/gregor/jprototerm/AppConfig.java
+++ b/src/main/java/com/gregor/jprototerm/AppConfig.java
@@ -50,10 +50,9 @@ public record AppConfig(
             "open_font_selector",
             "open_scrollback",
             "create_worktree",
-            "pane_sync_start",
+            "pane_sync_toggle",
             "pane_sync_select",
             "pane_sync_commit",
-            "pane_sync_end",
             "paste"
     );
 
@@ -120,10 +119,9 @@ public record AppConfig(
                         Map.entry("open_font_selector", KeyBinding.parse("ALT+T")),
                         Map.entry("open_scrollback", KeyBinding.parse("ALT+S")),
                         Map.entry("create_worktree", KeyBinding.parse("ALT+W")),
-                        Map.entry("pane_sync_start", KeyBinding.parse("ALT+Y")),
+                        Map.entry("pane_sync_toggle", KeyBinding.parse("ALT+Y")),
                         Map.entry("pane_sync_select", KeyBinding.parse("SPACE")),
                         Map.entry("pane_sync_commit", KeyBinding.parse("ALT+SHIFT+Y")),
-                        Map.entry("pane_sync_end", KeyBinding.parse("ALT+U")),
                         Map.entry("paste", KeyBinding.parse("CTRL+SHIFT+V"))
                 )
         );
diff --git a/src/main/java/com/gregor/jprototerm/Compositor.java b/src/main/java/com/gregor/jprototerm/Compositor.java
index 694571c..c16f310 100644
--- a/src/main/java/com/gregor/jprototerm/Compositor.java
+++ b/src/main/java/com/gregor/jprototerm/Compositor.java
@@ -144,8 +144,15 @@ public final class Compositor {
         return paneSyncSelectMode;
     }
 
-    public void startPaneSyncSelection() {
-        if (activePane() == null || paneSyncSelectMode) {
+    public void togglePaneSync() {
+        if (paneSyncSelectMode || !paneSyncPanes.isEmpty()) {
+            paneSyncSelectMode = false;
+            paneSyncSelection.clear();
+            paneSyncPanes.clear();
+            layoutVersion++;
+            return;
+        }
+        if (activePane() == null) {
             return;
         }
         paneSyncSelectMode = true;
@@ -176,16 +183,6 @@ public final class Compositor {
         layoutVersion++;
     }
 
-    public void endPaneSync() {
-        if (!paneSyncSelectMode && paneSyncSelection.isEmpty() && paneSyncPanes.isEmpty()) {
-            return;
-        }
-        paneSyncSelectMode = false;
-        paneSyncSelection.clear();
-        paneSyncPanes.clear();
-        layoutVersion++;
-    }
-
     public List<TerminalPane> paneSyncPeers(TerminalPane source) {
         prunePaneSyncState();
         if (source == null || !paneSyncPanes.contains(source)) {
diff --git a/src/main/java/com/gregor/jprototerm/TerminalWindow.java b/src/main/java/com/gregor/jprototerm/TerminalWindow.java
index 25adc8d..ffea88d 100644
--- a/src/main/java/com/gregor/jprototerm/TerminalWindow.java
+++ b/src/main/java/com/gregor/jprototerm/TerminalWindow.java
@@ -72,10 +72,9 @@ final class TerminalWindow {
         keyActions.put("open_font_selector", this::openFontSelector);
         keyActions.put("open_scrollback", this::openScrollbackInEditor);
         keyActions.put("create_worktree", this::createWorktreeInEditor);
-        keyActions.put("pane_sync_start", compositor::startPaneSyncSelection);
+        keyActions.put("pane_sync_toggle", compositor::togglePaneSync);
         keyActions.put("pane_sync_select", compositor::togglePaneSyncSelection);
         keyActions.put("pane_sync_commit", compositor::commitPaneSyncSelection);
-        keyActions.put("pane_sync_end", compositor::endPaneSync);
         keyActions.put("paste", this::pasteFromClipboard);
 
         StackPane root = new StackPane(compositor.canvas(), compositor.imageOverlay());
@@ -169,9 +168,9 @@ final class TerminalWindow {
                     "next_floating",
                     "previous_tab",
                     "next_tab",
+                    "pane_sync_toggle",
                     "pane_sync_select",
-                    "pane_sync_commit",
-                    "pane_sync_end" -> true;
+                    "pane_sync_commit" -> true;
             default -> false;
         };
     }