diff --git a/docs/users_guide/framework_basics/faster_than_lightspeed_constants.md b/docs/users_guide/framework_basics/faster_than_lightspeed_constants.md
index f7e31b99..04026efa 100644
--- a/docs/users_guide/framework_basics/faster_than_lightspeed_constants.md
+++ b/docs/users_guide/framework_basics/faster_than_lightspeed_constants.md
@@ -1,4 +1,4 @@
-# Faster than Lightspeed Constants
+# Faster-than-lightspeed Constants
 
 In most libraries, physical constants are implemented as constant (possibly `constexpr`)
 quantity values. Such an approach has some disadvantages, often resulting in longer
diff --git a/mkdocs.yml b/mkdocs.yml
index 8877b47f..eb6a8145 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -113,7 +113,7 @@ nav:
           - 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
+          - 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