diff --git a/Project.toml b/Project.toml
index 598f933..e8ee28e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -8,15 +8,15 @@ BlackBoxOptim = "a134a8b2-14d6-55f6-9291-3336d3ab0209"
 Combinatorics = "861a8166-3701-5b0c-9a16-15d98fcdc6aa"
 DelimitedFiles = "8bb1440f-4735-579b-a4ab-409b98df4dab"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
-GeneralizedGenerated = "6b9d7cbe-bcb9-11e9-073f-15a7a543e2eb"
 Optim = "429524aa-4258-5aef-a3af-852621145aeb"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+RuntimeGeneratedFunctions = "7e49a35a-f44a-4d26-94aa-eba1b4ca6b47"
 
 [compat]
 BlackBoxOptim = "0.6.1"
 Combinatorics = "1.0"
 Distributions = "0.23, 0.24, 0.25"
-GeneralizedGenerated = "0.2, 0.3"
+RuntimeGeneratedFunctions = "0.5.10"
 Optim = "0.18, 0.20, 0.22, 1.2, 1.3, 1.7"
 julia = "1"
 
diff --git a/src/CircuitFunction.jl b/src/CircuitFunction.jl
index 6cd84f9..bc21f04 100644
--- a/src/CircuitFunction.jl
+++ b/src/CircuitFunction.jl
@@ -42,8 +42,8 @@ function circuitfunction(circuitstring)
             new_circuit = new_circuit*i
         end
     end
-    circuit_expression = Meta.parse(new_circuit)
-    return mk_function([:T,:f],[],circuit_expression)
+    circuit_expression = Meta.parse("((T,f)->"* new_circuit *")")
+    return @RuntimeGeneratedFunction(circuit_expression)
 end
 
 function circtuitfunction_fixed_params(circuitstring,param_indices,param_values)
@@ -74,9 +74,8 @@ function tree_to_function(tree_array)
             essential_info[parent1][2] = "((("*type1*")^-1)+("*type2*")^-1)^-1"
         end
     end
-    circuitExpression = Meta.parse(essential_info[1][2])
-return mk_function([:T,:f],[],circuitExpression)
-end
+    circuit_expression = Meta.parse("((T,f)->"* essential_info[1][2] *")")
+return @RuntimeGeneratedFunction(circuit_expression)
 
 karva_to_function(karva::String) = tree_to_function(karva_to_tree(karva))
 karva_to_function(circuit::Circuit) = karva_to_function(circuit.karva)
diff --git a/src/EquivalentCircuits.jl b/src/EquivalentCircuits.jl
index 38a122f..8731518 100644
--- a/src/EquivalentCircuits.jl
+++ b/src/EquivalentCircuits.jl
@@ -5,9 +5,10 @@ module EquivalentCircuits
     export loadpopulation, get_parameter_upper_bound
     export simulateimpedance_noiseless
     export Circuit, EquivalentCircuit
-    using Random, Combinatorics, GeneralizedGenerated, DelimitedFiles, Distributions, Optim
+    using Random, Combinatorics, RuntimeGeneratedFunctions, DelimitedFiles, Distributions, Optim
     using BlackBoxOptim
     import Base: isless, length
+    RuntimeGeneratedFunctions.init(@__MODULE__)
 
     include("Circuits.jl") 
     include("CircuitFunction.jl")