API spec PDF: link to the actual PDF
Link to the PDF file, not to a page with an embedded PDF reader
diff --git a/README.md b/README.md
index e243fe7..8d9f2de 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@
### PSA Cryptography API
-You can read the [complete PSA cryptography API specification as a PDF document](https://github.com/ARMmbed/mbed-crypto/blob/psa-crypto-api/docs/PSA_Cryptography_API_Specification.pdf). The API reference is also available in [HTML format](https://htmlpreview.github.io/?https://github.com/ARMmbed/mbed-crypto/blob/psa-crypto-api/docs/html/index.html).
+You can read the [complete PSA cryptography API specification as a PDF document](https://github.com/ARMmbed/mbed-crypto/raw/psa-crypto-api/docs/PSA_Cryptography_API_Specification.pdf). The API reference is also available in [HTML format](https://htmlpreview.github.io/?https://github.com/ARMmbed/mbed-crypto/blob/psa-crypto-api/docs/html/index.html).
### Browsable library documentation