2 files changed, 6 insertions, 0 deletions
diff --git a/ui/curses.c b/ui/curses.c
index a6e260eb96..ec281125ac 100644
--- a/ui/curses.c
+++ b/ui/curses.c
@@ -225,6 +225,8 @@ static wint_t console_getch(enum maybe_keycode *maybe_keycode)
     case ERR:
         ret = -1;
         break;
+    default:
+        abort();
     }
     return ret;
 }
diff --git a/ui/input-linux.c b/ui/input-linux.c
index 59456fe765..a7b280b25b 100644
--- a/ui/input-linux.c
+++ b/ui/input-linux.c
@@ -113,6 +113,10 @@ static bool input_linux_check_toggle(InputLinux *il)
         return il->keydown[KEY_LEFTALT] &&
             il->keydown[KEY_RIGHTALT];
 
+    case GRAB_TOGGLE_KEYS_SHIFT_SHIFT:
+        return il->keydown[KEY_LEFTSHIFT] &&
+            il->keydown[KEY_RIGHTSHIFT];
+
     case GRAB_TOGGLE_KEYS_META_META:
         return il->keydown[KEY_LEFTMETA] &&
             il->keydown[KEY_RIGHTMETA];