diff --git a/doc/functional-tests.md b/doc/functional-tests.md
--- a/doc/functional-tests.md
+++ b/doc/functional-tests.md
@@ -203,7 +203,7 @@
 #### Style guidelines
 
 - Where possible, try to adhere to
-  [PEP-8 guidelines]([https://www.python.org/dev/peps/pep-0008/)
+  [PEP-8 guidelines](https://www.python.org/dev/peps/pep-0008/)
 - Use a python linter like flake8 before submitting PRs to catch common style
   nits (eg trailing whitespace, unused imports, etc)
 - Avoid wildcard imports where possible