diff --git a/packages/opencode/src/cli/cmd/tui/keymap.tsx b/packages/opencode/src/cli/cmd/tui/keymap.tsx
index 289bb901d6d1..7e1a4b069a94 100644
--- a/packages/opencode/src/cli/cmd/tui/keymap.tsx
+++ b/packages/opencode/src/cli/cmd/tui/keymap.tsx
@@ -110,6 +110,7 @@ function formatOptions(config: TuiConfig.Resolved) {
 }
 
 export function formatKeySequence(parts: Parameters<typeof formatKeySequenceExtra>[0], config: TuiConfig.Resolved) {
+  if (!parts?.length) return ""
   return formatKeySequenceExtra(parts, formatOptions(config))
 }
 
diff --git a/packages/opencode/test/cli/tui/keymap.test.ts b/packages/opencode/test/cli/tui/keymap.test.ts
new file mode 100644
index 000000000000..d056284dbb1c
--- /dev/null
+++ b/packages/opencode/test/cli/tui/keymap.test.ts
@@ -0,0 +1,14 @@
+import { expect, test } from "bun:test"
+import { formatKeySequence } from "@/cli/cmd/tui/keymap"
+import type { TuiConfig } from "@/cli/cmd/tui/config/tui"
+
+const config = {
+  keybinds: {
+    get: () => [],
+  },
+} as unknown as TuiConfig.Resolved
+
+test("formatKeySequence tolerates missing command bindings", () => {
+  expect(formatKeySequence(undefined, config)).toBe("")
+  expect(formatKeySequence([], config)).toBe("")
+})