diff --git a/src/dssp.jl b/src/dssp.jl
index 702c6d9..3a2818c 100644
--- a/src/dssp.jl
+++ b/src/dssp.jl
@@ -30,7 +30,6 @@ function _get_hbond_map(
     coord::AbstractArray{T, 3};
     cutoff::Float64 = DEFAULT_CUTOFF,
     margin::Float64 = DEFAULT_MARGIN,
-    return_e::Bool = false,
 ) where T <: Real
     residue_count, atoms_per_residue, _ = size(coord)
     @assert atoms_per_residue == 4
@@ -54,10 +53,6 @@ function _get_hbond_map(
 
     e = _pad(0.0, arr, (1,0), (0,1))
 
-    if return_e
-        return e
-    end
-
     local_mask = trues(residue_count, residue_count)
     for i in 1:residue_count
         local_mask[i, i] = false
@@ -143,4 +138,4 @@ function dssp(coords_chains::Vector{<:AbstractArray{T, 3}}) where T
     num_vectors_by_chain = [num_vector[get(cum_indices, n-1, 0)+1:cum_indices[n]] for n in 1:length(lengths)]
 
     return num_vectors_by_chain
-end
\ No newline at end of file
+end