diff --git a/tests/hrx-backend-test.cpp b/tests/hrx-backend-test.cpp
index 8fffb7d6f07f..38abc3c83b63 100644
--- a/tests/hrx-backend-test.cpp
+++ b/tests/hrx-backend-test.cpp
@@ -4119,8 +4119,15 @@ static void schedule_flash_attention_command(ggml_context * ctx,
         REQUIRE(copy.bindings.size() == 2);
         REQUIRE(copy.bindings[1].value == dispatch.bindings[2].value);
         REQUIRE(copy.bindings[0].value != copy.bindings[1].value);
-        REQUIRE(copy.bindings[1].length == static_cast<size_t>(key_value_token_count * key_value_head_count * value_head_size) * sizeof(ggml_fp16_t));
-        require_compile_parameter(dispatch, "ggml.flash_attention.value_layout", "1");
+        // engine #1989: the transposed V has the spread pitch - keys + 32 when the key count is a multiple of 64 - which
+        // the transpose kernel is told and the attention kernel derives from its key count (value_layout 2). The source
+        // binding stays the packed V.
+        const int64_t transposed_pitch = key_value_token_count % 64 == 0 ? key_value_token_count + 32 : key_value_token_count;
+        REQUIRE(copy.bindings[0].length == static_cast<size_t>(key_value_token_count * key_value_head_count * value_head_size) * sizeof(ggml_fp16_t));
+        REQUIRE(copy.bindings[1].length == static_cast<size_t>(transposed_pitch * key_value_head_count * value_head_size) * sizeof(ggml_fp16_t));
+        require_compile_parameter(copy, "ggml.copy_transpose_f16.output_pitch", std::to_string(transposed_pitch));
+        require_compile_parameter(dispatch, "ggml.flash_attention.value_layout", "2");
+        REQUIRE(dispatch.kernel.compile_parameters.count("ggml.flash_attention.value_transposed_pitch") == 0);
     } else {
         REQUIRE(dispatch.kernel.compile_parameters.count("ggml.flash_attention.value_layout") == 0);
     }
@@ -8375,7 +8382,7 @@ static void run_alias_value_import_checks() {
         value_map
             .add_snapshot_value({ ggml::hrx::ValueId(0), ggml::hrx::ValueKind::External, ggml::hrx::ValueStorageId(0),
                                   ggml::hrx::ValueId(0), ggml::hrx::ValueId(), 0, 8 * sizeof(float), GGML_TYPE_F32, ne,
-                                  nb, 8, 8 * sizeof(float), true, nullptr, std::nullopt })
+                                  nb, 8, 8 * sizeof(float), true, nullptr, ggml::hrx::AliasMiss::None, std::nullopt })
             .success());
     REQUIRE(value_map.add_snapshot_storage({ ggml::hrx::ValueStorageId(1), ggml::hrx::ValueId(1), 8 * sizeof(float) })
                 .success());
@@ -8383,7 +8390,7 @@ static void run_alias_value_import_checks() {
         value_map
             .add_snapshot_value({ ggml::hrx::ValueId(1), ggml::hrx::ValueKind::Transient, ggml::hrx::ValueStorageId(1),
                                   ggml::hrx::ValueId(1), ggml::hrx::ValueId(), 0, 8 * sizeof(float), GGML_TYPE_F32, ne,
-                                  nb, 8, 8 * sizeof(float), true, nullptr, std::nullopt })
+                                  nb, 8, 8 * sizeof(float), true, nullptr, ggml::hrx::AliasMiss::None, std::nullopt })
             .success());
     REQUIRE(value_map.alias_storage(ggml::hrx::ValueId(1), ggml::hrx::ValueId(0)).success());
     const ggml::hrx::Value * aliased_value = value_map.find(ggml::hrx::ValueId(1));