diff --git a/app/internal/xkb/xkb_unix.go b/app/internal/xkb/xkb_unix.go
index 9038f2ec..5485e18a 100644
--- a/app/internal/xkb/xkb_unix.go
+++ b/app/internal/xkb/xkb_unix.go
@@ -124,6 +124,11 @@ func (x *Context) DispatchKey(keyCode uint32) (events []event.Event) {
 	sym := C.xkb_state_key_get_one_sym(x.state, C.xkb_keycode_t(keyCode))
 	if n, ok := convertKeysym(sym); ok {
 		cmd := key.Event{Name: n}
+		// Ensure that a physical backtab key is translated to
+		// Shift-Tab.
+		if sym == C.XKB_KEY_ISO_Left_Tab {
+			cmd.Modifiers |= key.ModShift
+		}
 		if C.xkb_state_mod_name_is_active(x.state, (*C.char)(unsafe.Pointer(&_XKB_MOD_NAME_CTRL[0])), C.XKB_STATE_MODS_EFFECTIVE) == 1 {
 			cmd.Modifiers |= key.ModCtrl
 		}