diff --git a/README.md b/README.md
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--- a/README.md
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@@ -157,4 +157,5 @@ A list of ideas and TODO. Don't hesitate to give feedback on the ones you really
 
 ## Note on test files
 
-* The test files used, provided in `tests/src` are under CC-BY license, from arXiv, HAL and PhysRev.
+* The test files used, provided in `tests/src` are under CC-BY license, from arXiv, HAL, New Journal of Physics and PhysRev.
+* The `test_watermark.pdf` file originally had a first blank page, which is supposed to be teared down. For this test, I just duplicated the first page, as the original first page contained personnal information.
diff --git a/tests/src/test_watermark.pdf b/tests/src/test_watermark.pdf
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