diff --git a/src/ecc/codes/classical/hamming.jl b/src/ecc/codes/classical/hamming.jl
index 40ee06f05..3c0c6a8dd 100644
--- a/src/ecc/codes/classical/hamming.jl
+++ b/src/ecc/codes/classical/hamming.jl
@@ -1,3 +1,5 @@
+using SparseArrays
+
 abstract type ClassicalCode end
 
 """
@@ -25,8 +27,6 @@ struct Hamming <: ClassicalCode
     end
 end
 
-using SparseArrays
-
 function parity_checks(h::Hamming)
     n = 2 ^ h.r - 1
     rows = Int[]