diff --git a/test/common/buffer.cpp b/test/common/buffer.cpp
index 86343d0dad4f899240a7895c0b1855bfda876867..f8a51887537ae26719681f6d447a01b26b22313e 100644
--- a/test/common/buffer.cpp
+++ b/test/common/buffer.cpp
@@ -21,7 +21,10 @@
 
 namespace kai::test {
 
-Buffer::Buffer(const size_t size) : m_user_buffer_size(size) {
+Buffer::Buffer(const size_t size) : Buffer(size, 0) {
+}
+
+Buffer::Buffer(const size_t size, const uint8_t init_value = 0) : m_user_buffer_size(size) {
     KAI_ASSUME_MSG(size > 0, "Buffers must be of non-zero size");
 
     const char* val = getenv("KAI_TEST_BUFFER_POLICY");
@@ -57,9 +60,7 @@ Buffer::Buffer(const size_t size) : m_user_buffer_size(size) {
         default:
             allocate();
     }
-}
 
-Buffer::Buffer(const size_t size, uint8_t init_value) : Buffer(size) {
     memset(data(), init_value, size);
 }
 
diff --git a/test/common/compare.cpp b/test/common/compare.cpp
index 29d96493f4e2c8c112d078885d9ffac522e270a7..4f503b1443deef46b031a29bdf84b7ba9334855f 100644
--- a/test/common/compare.cpp
+++ b/test/common/compare.cpp
@@ -78,6 +78,10 @@ bool compare_raw(
                             const auto [abs_err, rel_err] = calculate_error(imp_value, ref_value);
 
                             if (abs_err != 0 || rel_err != 0) {
+                                if (!in_roi) {
+                                    handler.mark_as_failed();
+                                }
+
                                 const auto notifying = !in_roi || handler.handle_data(abs_err, rel_err);
 
                                 if (notifying) {
@@ -175,6 +179,10 @@ bool compare_per_row(
                             const auto [abs_err, rel_err] = calculate_error(imp_value, ref_value);
 
                             if (abs_err != 0 || rel_err != 0) {
+                                if (!in_roi) {
+                                    handler.mark_as_failed();
+                                }
+
                                 const auto notifying = !in_roi || handler.handle_data(abs_err, rel_err);
 
                                 if (notifying) {
diff --git a/test/tests/imatmul_test.cpp b/test/tests/imatmul_test.cpp
index ca4b71b37918afd86ce97b270a39629a7d260326..8f4922dd51f8e7575cc36e8239bab123dd2d9d5f 100644
--- a/test/tests/imatmul_test.cpp
+++ b/test/tests/imatmul_test.cpp
@@ -472,6 +472,10 @@ TEST_P(IndirectMatMulTest, Output) {
         ReferenceGenerator::get_test_reference({shape, method.pack_shape, method.format, k_chunk_length, clamp_rate});
     const Rect portion = output_portion.compute_portion(shape.m, shape.n, method.pack_shape.m, method.pack_shape.n);
 
+    if (portion.height() == 0 || portion.width() == 0) {
+        GTEST_SKIP() << "Empty dimension of matrix(" << portion.width() << "," << portion.height() << ")";
+    }
+
     // Call packing kernels, and then imatmul kernel
     Buffer lhs_packed = pack_lhs(method.lhs, portion, test_data, shape.m, k_chunk);
     Buffer rhs_packed = pack_rhs(method.rhs, portion, test_data, shape.n, k_chunk, method.format.rhs.data_type());