diff --git a/src/hamiltonian.jl b/src/hamiltonian.jl
index 99a56df..a29912f 100644
--- a/src/hamiltonian.jl
+++ b/src/hamiltonian.jl
@@ -27,7 +27,7 @@ function symbolic_hamiltonian(H::Base.Callable, dim::Int, params::Union{Tuple, N
     rewrite_code_H = rewrite_hamiltonian(code_H, (q, p, st), sparams)
 
     # create the related function
-    gH = @RuntimeGeneratedFunction(Symbolics.inject_registered_module_functions(rewrite_code_H))
+    gH = @RuntimeGeneratedFunction(rewrite_code_H)
 
     return st, q, p, sparams, sH, gH
 end
diff --git a/src/lagrangian.jl b/src/lagrangian.jl
index 264af6f..a5237c5 100644
--- a/src/lagrangian.jl
+++ b/src/lagrangian.jl
@@ -27,7 +27,7 @@ function symbolic_lagrangian(L::Base.Callable, dim::Int, params::Union{Tuple, Na
     rewrite_code_L = rewrite_lagrangian(code_L, (x, v, st), sparams)
 
     # create the related function
-    gL = @RuntimeGeneratedFunction(Symbolics.inject_registered_module_functions(rewrite_code_L))
+    gL = @RuntimeGeneratedFunction(rewrite_code_L)
 
     return st, x, v, sparams, sL, gL
 end