diff --git a/resources/dxt_images/64x256_bands.png b/resources/dxt_images/64x256_bands.png
new file mode 100644
index 0000000..b0ce025
Binary files /dev/null and b/resources/dxt_images/64x256_bands.png differ
diff --git a/resources/dxt_images/64x256_bands_dxt1.dds b/resources/dxt_images/64x256_bands_dxt1.dds
new file mode 100644
index 0000000..9be1b5f
Binary files /dev/null and b/resources/dxt_images/64x256_bands_dxt1.dds differ
diff --git a/resources/dxt_images/64x256_bands_dxt3.dds b/resources/dxt_images/64x256_bands_dxt3.dds
new file mode 100644
index 0000000..fc24c05
Binary files /dev/null and b/resources/dxt_images/64x256_bands_dxt3.dds differ
diff --git a/resources/dxt_images/64x256_bands_dxt5.dds b/resources/dxt_images/64x256_bands_dxt5.dds
new file mode 100644
index 0000000..64c1319
Binary files /dev/null and b/resources/dxt_images/64x256_bands_dxt5.dds differ
diff --git a/src/tests/texture_format_dxt_tests.cpp b/src/tests/texture_format_dxt_tests.cpp
index 3a7b95f..fc7afd0 100644
--- a/src/tests/texture_format_dxt_tests.cpp
+++ b/src/tests/texture_format_dxt_tests.cpp
@@ -18,6 +18,10 @@ static constexpr const char kOpaqueDXT1[] = "D:\\dxt_images\\plasma_dxt1.dds";
 static constexpr const char kOpaqueDXT3[] = "D:\\dxt_images\\plasma_dxt3.dds";
 static constexpr const char kOpaqueDXT5[] = "D:\\dxt_images\\plasma_dxt5.dds";
 
+static constexpr const char kOpaqueDXT1NonSquare[] = "D:\\dxt_images\\64x256_bands_dxt1.dds";
+static constexpr const char kOpaqueDXT3NonSquare[] = "D:\\dxt_images\\64x256_bands_dxt3.dds";
+static constexpr const char kOpaqueDXT5NonSquare[] = "D:\\dxt_images\\64x256_bands_dxt5.dds";
+
 struct TestCase {
   const char *filename;
   TextureFormatDXTTests::CompressedTextureFormat format;
@@ -32,6 +36,12 @@ static constexpr TestCase kTestCases[] = {
     {kOpaqueDXT5, TextureFormatDXTTests::CompressedTextureFormat::DXT5},
 };
 
+static constexpr TestCase kNonSquareTestCases[] = {
+    {kOpaqueDXT1NonSquare, TextureFormatDXTTests::CompressedTextureFormat::DXT1},
+    {kOpaqueDXT3NonSquare, TextureFormatDXTTests::CompressedTextureFormat::DXT3},
+    {kOpaqueDXT5NonSquare, TextureFormatDXTTests::CompressedTextureFormat::DXT5},
+};
+
 static std::string GetFormatName(TextureFormatDXTTests::CompressedTextureFormat texture_format);
 
 TextureFormatDXTTests::TextureFormatDXTTests(TestHost &host, std::string output_dir)
@@ -42,6 +52,12 @@ TextureFormatDXTTests::TextureFormatDXTTests(TestHost &host, std::string output_
       TestMipmap(test.filename, test.format);
     };
   }
+
+  for (auto &test : kNonSquareTestCases) {
+    tests_[MakeTestName(test.filename, test.format, true)] = [this, &test]() {
+      TestMipmap(test.filename, test.format);
+    };
+  }
 }
 
 void TextureFormatDXTTests::Initialize() {