diff --git a/docs/src/NonlinearFitting.md b/docs/src/NonlinearFitting.md
index 44f63a7..1a76454 100644
--- a/docs/src/NonlinearFitting.md
+++ b/docs/src/NonlinearFitting.md
@@ -90,7 +90,7 @@ Then 4 different equations of state will be fitted.
 ## Public interfaces
 
 ```@docs
-lsqfit(::EquationOfStateForm, eos::E, xdata::X, ydata::Y; debug = false, kwargs...) where {E<:EquationOfState,X<:AbstractVector,Y<:AbstractVector}
+lsqfit(::EquationForm, eos::E, xdata::X, ydata::Y; debug = false, kwargs...) where {E<:EquationOfState,X<:AbstractVector,Y<:AbstractVector}
 ```