diff --git a/docs/fitness-functions.md b/docs/fitness-functions.md
index 30b7f02d..a5d4c13a 100644
--- a/docs/fitness-functions.md
+++ b/docs/fitness-functions.md
@@ -77,11 +77,6 @@ template<typename GeneType, size_t ChromLen>
 class FitnessFunction;
 ```
 
-By default, the chromosome length is assumed to be constant -
-ie. all of the solutions will have the same chromosome length
-which will not change throughout the run - but there is also a
-way to use variable chromosome lengths.
-
 ### Number of objectives
 
 The number of objectives is another important property of the