diff --git a/src/utility/cft.jl b/src/utility/cft.jl
index fd68996..346529f 100644
--- a/src/utility/cft.jl
+++ b/src/utility/cft.jl
@@ -1,5 +1,3 @@
-Potts_βc(q) = log(1 + sqrt(q))
-
 function cft_data(scheme::TNRScheme; v=1, unitcell=1)
     # make the indices
     indices = [[i, -i, i + 1, -(i + unitcell)] for i in 1:unitcell]