diff --git a/src/sparse_matrix_utils.c b/src/sparse_matrix_utils.c
index dbbc0b62..614d76fd 100644
--- a/src/sparse_matrix_utils.c
+++ b/src/sparse_matrix_utils.c
@@ -3,12 +3,12 @@
 #include "matrix.h"
 
 
-sparse_matrix_t *sparse_matrix_new_from_matrix(matrix_t *matrix) {
+sparse_matrix_t *sparse_matrix_new_from_matrix(double_matrix_t *matrix) {
     sparse_matrix_t *sparse = sparse_matrix_new_shape(matrix->m, matrix->n);
 
     for (size_t i = 0; i < matrix->m; i++) {
         for (size_t j = 0; j < matrix->n; j++) {    
-            double value = matrix_get(matrix, i, j);
+            double value = double_matrix_get(matrix, i, j);
             if (!double_equals(value, 0.0)) {
                 sparse_matrix_append(sparse, j, value);
             }