diff --git a/src/asahi/layout/tests/test-layout.cpp b/src/asahi/layout/tests/test-layout.cpp
index 9285cda9aa7..1cc7c436793 100644
--- a/src/asahi/layout/tests/test-layout.cpp
+++ b/src/asahi/layout/tests/test-layout.cpp
@@ -42,6 +42,30 @@ TEST(Cubemap, Nonmipmapped)
    EXPECT_EQ(layout.size_B, ALIGN_POT(512 * 512 * 4 * 6, 0x4000));
 }
 
+TEST(Cubemap, RoundsToOnePage)
+{
+   struct ail_layout layout = {
+      .width_px = 63,
+      .height_px = 63,
+      .depth_px = 6,
+      .sample_count_sa = 1,
+      .levels = 6,
+      .tiling = AIL_TILING_TWIDDLED,
+      .format = PIPE_FORMAT_R32_FLOAT,
+   };
+
+   ail_make_miptree(&layout);
+
+   EXPECT_EQ(layout.level_offsets_B[0], 0);
+   EXPECT_EQ(layout.level_offsets_B[1], 0x4000);
+   EXPECT_EQ(layout.level_offsets_B[2], 0x5000);
+   EXPECT_EQ(layout.level_offsets_B[3], 0x5400);
+   EXPECT_EQ(layout.level_offsets_B[4], 0x5500);
+   EXPECT_TRUE(layout.page_aligned_layers);
+   EXPECT_EQ(layout.layer_stride_B, 0x8000);
+   EXPECT_EQ(layout.size_B, 0x30000);
+}
+
 TEST(Linear, SmokeTestBuffer)
 {
    struct ail_layout layout = {