diff --git a/src/ui/components/chrome/HelpDialog.tsx b/src/ui/components/chrome/HelpDialog.tsx
index 51b63f39..1c222574 100644
--- a/src/ui/components/chrome/HelpDialog.tsx
+++ b/src/ui/components/chrome/HelpDialog.tsx
@@ -48,6 +48,7 @@ export function HelpDialog({
         ["a", "toggle AI notes"],
         ["z", "toggle unchanged context"],
         ["l / w / m", "lines / wrap / metadata"],
+        ["e", "open file in $EDITOR"],
       ],
     },
     {
diff --git a/src/ui/components/ui-components.test.tsx b/src/ui/components/ui-components.test.tsx
index 52f70191..297f2adc 100644
--- a/src/ui/components/ui-components.test.tsx
+++ b/src/ui/components/ui-components.test.tsx
@@ -2235,13 +2235,13 @@ describe("UI components", () => {
     const frame = await captureFrame(
       <HelpDialog
         canRefresh={true}
-        terminalHeight={38}
+        terminalHeight={39}
         terminalWidth={76}
         theme={theme}
         onClose={() => {}}
       />,
       76,
-      38,
+      39,
     );
 
     const expectedRows = [
@@ -2268,6 +2268,7 @@ describe("UI components", () => {
       "a               toggle AI notes",
       "z               toggle unchanged context",
       "l / w / m       lines / wrap / metadata",
+      "e               open file in $EDITOR",
       "Review",
       "/               focus file filter",
       "c               create review note",
diff --git a/src/ui/hooks/useAppKeyboardShortcuts.ts b/src/ui/hooks/useAppKeyboardShortcuts.ts
index 85b1ca20..9154b130 100644
--- a/src/ui/hooks/useAppKeyboardShortcuts.ts
+++ b/src/ui/hooks/useAppKeyboardShortcuts.ts
@@ -108,6 +108,7 @@ export function useAppKeyboardShortcuts({
   toggleGapForSelectedHunk,
   toggleHelp,
   toggleHunkHeaders,
+  triggerEditSelectedFile,
   toggleLineNumbers,
   toggleLineWrap,
   toggleSidebar,
@@ -466,6 +467,11 @@ export function useAppKeyboardShortcuts({
       return;
     }
 
+    if (key.name === "e" || key.sequence === "e") {
+      runAndCloseMenu(triggerEditSelectedFile);
+      return;
+    }
+
     if (key.name === "[") {
       runAndCloseMenu(() => moveToHunk(-1));
       return;
diff --git a/src/ui/lib/appMenus.ts b/src/ui/lib/appMenus.ts
index 4d5650ce..cf44d1d1 100644
--- a/src/ui/lib/appMenus.ts
+++ b/src/ui/lib/appMenus.ts
@@ -87,6 +87,7 @@ export function buildAppMenus({
     {
       kind: "item",
       label: "Open file in editor",
+      hint: "e",
       action: triggerEditSelectedFile,
     },
   ];