diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/README.md b/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
index 3997ac0d0..4f945cbe5 100644
--- a/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
+++ b/src/Magnum/Math/Test/ColorBatchTestFiles/README.md
@@ -12,11 +12,13 @@ blocks.
 
 Both are then passed through StbDxtImageConverter and subsequently decoded
 back to `checkerboard.png` and `checkerboard-odd.png` with
-`compress-format-blocks.py` to act as a ground truth, the output of the script
-and its full invocation is pasted to the `ColorBatchTest.cpp`.
+`format-block-data.py` to act as a ground truth. The full invocation is listed
+for each particular case in `ColorBatchTest.cpp`, the output of the script is
+then right below.
 
-The remaining images are generated with `extract-interesting-blocks.py`, the
-output of that script and its full invocation is again in `ColorBatchTest.cpp`.
+The remaining `bc*.png` images are generated with
+`extract-interesting-blocks.py`, the full invocation for each particular case
+and the generated output is again in `ColorBatchTest.cpp`.
 
 Unlike in other tests, the images are PNGs and not TGAs. The full test process
 requires `BcDecImageConverter` from the plugins repo anyway, so there's no
diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png b/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png
index 31440d674..3e0400096 100644
Binary files a/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png and b/src/Magnum/Math/Test/ColorBatchTestFiles/bc1.png differ
diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png b/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png
index f0ebe3c20..83fbaf89b 100644
Binary files a/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png and b/src/Magnum/Math/Test/ColorBatchTestFiles/bc3.png differ
diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png
index 46a97126c..99fb0bba1 100644
Binary files a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png and b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard-odd.png differ
diff --git a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png
index b294507ba..d2f4c0ae4 100644
Binary files a/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png and b/src/Magnum/Math/Test/ColorBatchTestFiles/checkerboard.png differ