diff --git a/docs/src/examples/anderson-model.md b/docs/src/examples/anderson-model.md
index 7c99ac8..ec17db5 100644
--- a/docs/src/examples/anderson-model.md
+++ b/docs/src/examples/anderson-model.md
@@ -156,12 +156,12 @@ function ϵ(x)
     return x
 end
 
-function J(x)
+function V(x)
     return sqrt(1 - x^2) # semi-circular density of states
 end
 
-chainparams1 = chaincoeffs_fermionic(N, β, 1.0; ϵ, J, save=false) # empty
-chainparams2 = chaincoeffs_fermionic(N, β, 2.0; ϵ, J, save=false) # filled
+chainparams1 = chaincoeffs_fermionic(N, β, 1.0; ϵ, V, save=false) # empty
+chainparams2 = chaincoeffs_fermionic(N, β, 2.0; ϵ, V, save=false) # filled
 ```
 We then specify the simulation parameters
 ```julia