diff --git a/src/gui/platform/unix/qxkbcommon_p.h b/src/gui/platform/unix/qxkbcommon_p.h
index 8e6613d2b59..03e30f55106 100644
--- a/src/gui/platform/unix/qxkbcommon_p.h
+++ b/src/gui/platform/unix/qxkbcommon_p.h
@@ -63,7 +63,46 @@ public:
         return sym >= 0x20 && sym <= 0xff;
     }
     static bool isKeypad(xkb_keysym_t sym) {
-        return sym >= XKB_KEY_KP_Space && sym <= XKB_KEY_KP_9;
+        switch (sym) {
+        case XKB_KEY_KP_Space:
+        case XKB_KEY_KP_Tab:
+        case XKB_KEY_KP_Enter:
+        case XKB_KEY_KP_F1:
+        case XKB_KEY_KP_F2:
+        case XKB_KEY_KP_F3:
+        case XKB_KEY_KP_F4:
+        case XKB_KEY_KP_Home:
+        case XKB_KEY_KP_Left:
+        case XKB_KEY_KP_Up:
+        case XKB_KEY_KP_Right:
+        case XKB_KEY_KP_Down:
+        case XKB_KEY_KP_Prior:
+        case XKB_KEY_KP_Next:
+        case XKB_KEY_KP_End:
+        case XKB_KEY_KP_Begin:
+        case XKB_KEY_KP_Insert:
+        case XKB_KEY_KP_Delete:
+        case XKB_KEY_KP_Equal:
+        case XKB_KEY_KP_Multiply:
+        case XKB_KEY_KP_Add:
+        case XKB_KEY_KP_Separator:
+        case XKB_KEY_KP_Subtract:
+        case XKB_KEY_KP_Decimal:
+        case XKB_KEY_KP_Divide:
+        case XKB_KEY_KP_0:
+        case XKB_KEY_KP_1:
+        case XKB_KEY_KP_2:
+        case XKB_KEY_KP_3:
+        case XKB_KEY_KP_4:
+        case XKB_KEY_KP_5:
+        case XKB_KEY_KP_6:
+        case XKB_KEY_KP_7:
+        case XKB_KEY_KP_8:
+        case XKB_KEY_KP_9:
+            return true;
+        default:
+            return false;
+        }
     }
 
     static void setXkbContext(QPlatformInputContext *inputContext, struct xkb_context *context);