diff --git a/src/tests/monitor-unit-tests.c b/src/tests/monitor-unit-tests.c
index ffeafe1ef..5aedb7844 100644
--- a/src/tests/monitor-unit-tests.c
+++ b/src/tests/monitor-unit-tests.c
@@ -9286,6 +9286,24 @@ meta_test_monitor_calculate_mode_scale (void)
       .exp = 1.5,
       .exp_nofrac = 1.0,
     },
+    {
+      .name = "Dell XPS 9320",
+      .width = 3840,
+      .height = 2400,
+      .width_mm = 290,
+      .height_mm = 180,
+      .exp = 2.5,
+      .exp_nofrac = 2.0,
+    },
+    {
+      .name = "Lenovo ThinkPad X1 Yoga Gen 6",
+      .width = 3840,
+      .height = 2400,
+      .width_mm = 300,
+      .height_mm = 190,
+      .exp = 2.5,
+      .exp_nofrac = 2.0,
+    },
     {
       .name = "Generic 23\" 1080p",
       .width = 1920,