diff --git a/poincare/test/approximation.cpp b/poincare/test/approximation.cpp
index fadb677b1..e15204106 100644
--- a/poincare/test/approximation.cpp
+++ b/poincare/test/approximation.cpp
@@ -433,14 +433,10 @@ QUIZ_CASE(poincare_approximation_function) {
   assert_expression_approximates_to<double>("transpose([[1,7,5][4,2,8]])", "[[1,4][7,2][5,8]]");
   assert_expression_approximates_to<double>("transpose([[1,2][4,5][7,8]])", "[[1,4,7][2,5,8]]");
 
-  assert_expression_approximates_to<double>("ref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,1.4,1.2,1.6][0,1,1.1,1.2][0,0,1,1.2215568862275]]");
-  assert_expression_approximates_to<double>("rref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,0,0,3.3532934131737ᴇ-1][0,1,0,-0.1437125748503][0,0,1,1.2215568862275]]");
-  assert_expression_approximates_to<double>("ref([[0,2,-1][5,6,7][12,11,10]])", "[[1,9.1666666666667ᴇ-1,8.3333333333333ᴇ-1][0,1,-0.5][0,0,1]]");
-  assert_expression_approximates_to<double>("rref([[0,2,-1][5,6,7][12,11,10]])", "[[1,0,0][0,1,0][0,0,1]]");
-  assert_expression_approximates_to<float>("ref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,1.4,1.2,1.6][0,1,1.1,1.2][0,0,1,1.221557]]");
-  assert_expression_approximates_to<float>("rref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,0,0,0.3353293][0,1,0,-0.1437126][0,0,1,1.221557]]");
-  assert_expression_approximates_to<float>("ref([[0,2,-1][5,6,7][12,11,10]])", "[[1,0.9166667,0.8333333][0,1,-0.5][0,0,1]]");
-  assert_expression_approximates_to<float>("rref([[0,2,-1][5,6,7][12,11,10]])", "[[1,0,0][0,1,0][0,0,1]]");
+  assert_expression_approximates_to<double>("ref([[0,2,-1][5,6,7][10,11,10]])", "[[1,1.1,1][0,1,-0.5][0,0,1]]");
+  assert_expression_approximates_to<double>("rref([[0,2,-1][5,6,7][10,11,10]])", "[[1,0,0][0,1,0][0,0,1]]");
+  assert_expression_approximates_to<float>("ref([[0,2,-1][5,6,7][10,11,10]])", "[[1,1.1,1][0,1,-0.5][0,0,1]]");
+  assert_expression_approximates_to<float>("rref([[0,2,-1][5,6,7][10,11,10]])", "[[1,0,0][0,1,0][0,0,1]]");
 
   assert_expression_approximates_to<float>("cross([[1][2][3]],[[4][7][8]])", "[[-5][4][-1]]");
   assert_expression_approximates_to<double>("cross([[1][2][3]],[[4][7][8]])", "[[-5][4][-1]]");
diff --git a/poincare/test/simplification.cpp b/poincare/test/simplification.cpp
index 32b5bf580..fda691e27 100644
--- a/poincare/test/simplification.cpp
+++ b/poincare/test/simplification.cpp
@@ -1048,11 +1048,14 @@ QUIZ_CASE(poincare_simplification_matrix) {
   assert_parsed_expression_simplify_to("ref([[1,0,√(4)][0,1,1/√(2)][0,0,1]])", "[[1,0,2][0,1,√(2)/2][0,0,1]]");
   assert_parsed_expression_simplify_to("rref([[1,0,√(4)][0,1,1/√(2)][0,0,0]])", "[[1,0,2][0,1,√(2)/2][0,0,0]]");
   assert_parsed_expression_simplify_to("ref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,7/5,6/5,8/5][0,1,11/10,6/5][0,0,1,204/167]]");
+  assert_parsed_expression_simplify_to("rref([[1,0,3,4][5,7,6,8][0,10,11,12]])", "[[1,0,0,56/167][0,1,0,-24/167][0,0,1,204/167]]");
   assert_parsed_expression_simplify_to("ref([[1,0][5,6][0,10]])", "[[1,6/5][0,1][0,0]]");
   assert_parsed_expression_simplify_to("rref([[1,0][5,6][0,10]])", "[[1,0][0,1][0,0]]");
   assert_parsed_expression_simplify_to("ref([[0,0][0,0][0,0]])", "[[0,0][0,0][0,0]]");
   assert_parsed_expression_simplify_to("rref([[0,0][0,0][0,0]])", "[[0,0][0,0][0,0]]");
   assert_parsed_expression_simplify_to("rref([[0,1][1ᴇ-100,1]])", "[[1,0][0,1]]");
+  assert_parsed_expression_simplify_to("ref([[0,2,-1][5,6,7][12,11,10]])", "[[1,11/12,5/6][0,1,-1/2][0,0,1]]");
+  assert_parsed_expression_simplify_to("rref([[0,2,-1][5,6,7][12,11,10]])", "[[1,0,0][0,1,0][0,0,1]]");
   /* Results for ref depend on the implementation. In any case :
    * - Rows with only zeros must be at the bottom.
    * - Leading coefficient of other rows must be to the right (strictly) of the