diff --git a/mkdocs.yml b/mkdocs.yml
index 106c9a7d..8877b47f 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -109,11 +109,11 @@ nav:
           - Interface Introduction: users_guide/framework_basics/interface_introduction.md
           - Systems of Quantities: users_guide/framework_basics/systems_of_quantities.md
           - Systems of Units: users_guide/framework_basics/systems_of_units.md
-          - Faster Than Lightspeed Constants: users_guide/framework_basics/faster_than_lightspeed_constants.md
           - Simple and Typed Quantities: users_guide/framework_basics/simple_and_typed_quantities.md
           - Value Conversions: users_guide/framework_basics/value_conversions.md
           - Quantity Arithmetics: users_guide/framework_basics/quantity_arithmetics.md
           - Quantities of Different Characters: users_guide/framework_basics/quantities_of_different_characters.md
+          - Faster than Lightspeed Constants: users_guide/framework_basics/faster_than_lightspeed_constants.md
           - Dimensionless Quantities: users_guide/framework_basics/dimensionless_quantities.md
           - The Affine Space: users_guide/framework_basics/the_affine_space.md
           - Obtaining Metadata: users_guide/framework_basics/obtaining_metadata.md