diff --git a/include/htool/hmatrix/hmatrix.hpp b/include/htool/hmatrix/hmatrix.hpp
index d537634c..2d1d8b65 100644
--- a/include/htool/hmatrix/hmatrix.hpp
+++ b/include/htool/hmatrix/hmatrix.hpp
@@ -193,8 +193,8 @@ class HMatrix : public TreeNode<HMatrix<CoefficientPrecision, CoordinatePrecisio
     // HMatrix node setters
     void set_symmetry(char symmetry) { m_symmetry = symmetry; }
     void set_UPLO(char UPLO) { m_UPLO = UPLO; }
-    void set_symmetry_for_leaves(char symmetry) const { m_symmetry_type_for_leaves = symmetry; }
-    void set_UPLO_for_leaves(char UPLO) const { m_UPLO_for_leaves = UPLO; }
+    void set_symmetry_for_leaves(char symmetry) { m_symmetry_type_for_leaves = symmetry; }
+    void set_UPLO_for_leaves(char UPLO) { m_UPLO_for_leaves = UPLO; }
     void set_target_cluster(const Cluster<CoordinatePrecision> *new_target_cluster) { m_target_cluster = new_target_cluster; }
 
     // Test properties