diff --git a/doc/manual/manual/tubes/src.cpp b/doc/manual/manual/tubes/src.cpp
index 8e3a932f3..feac64784 100644
--- a/doc/manual/manual/tubes/src.cpp
+++ b/doc/manual/manual/tubes/src.cpp
@@ -187,9 +187,9 @@ TEST_CASE("SlicedTube class - manual")
     Interval y(0,0.2);
     x.invert(y, v_t);
 
-    for(const auto& t : v_t)
+    for(const auto& ti : v_t)
     {
-      IntervalVector z = cart_prod(t,y);
+      IntervalVector z = cart_prod(ti,y);
       DefaultFigure::draw_box(z, Color::red());
     }
     // [slicedtube-class-5-end]
diff --git a/tests/core/domains/interval/codac2_tests_IntervalMatrix.cpp b/tests/core/domains/interval/codac2_tests_IntervalMatrix.cpp
index f54c0825f..dedb96fcb 100644
--- a/tests/core/domains/interval/codac2_tests_IntervalMatrix.cpp
+++ b/tests/core/domains/interval/codac2_tests_IntervalMatrix.cpp
@@ -505,8 +505,8 @@ TEST_CASE("IntervalMatrix - mixing type")
 {
   {
     Matrix m1 {
-      { {1},{2} },
-      { {3},{4} }
+      { 1,2 },
+      { 3,4 }
     };
 
     // Interval - Matrix
@@ -611,13 +611,13 @@ TEST_CASE("IntervalMatrix - mixing type")
 
   {
     Matrix m1 {
-      { {1},{2} },
-      { {3},{4} }
+      { 1,2 },
+      { 3,4 }
     };
 
     Matrix m2 {
-      { {2},{3} },
-      { {4},{5} }
+      { 2,3 },
+      { 4,5 }
     };
 
     IntervalMatrix im(m1,m2);
diff --git a/tests/core/domains/interval/codac2_tests_IntervalVector.cpp b/tests/core/domains/interval/codac2_tests_IntervalVector.cpp
index 04e4be366..84f48b081 100644
--- a/tests/core/domains/interval/codac2_tests_IntervalVector.cpp
+++ b/tests/core/domains/interval/codac2_tests_IntervalVector.cpp
@@ -638,9 +638,9 @@ TEST_CASE("IntervalVector")
 
   {
     IntervalVector a{Interval::empty(),{-1,1}};
-    IntervalVector b{{-1,1},Interval::empty()};
-    IntervalVector c = a | b;
-    CHECK(c.is_empty());
+    IntervalVector b2{{-1,1},Interval::empty()};
+    IntervalVector c2 = a | b2;
+    CHECK(c2.is_empty());
   }
 }
 
diff --git a/tests/core/domains/tube/codac2_tests_predefined_tubes.cpp b/tests/core/domains/tube/codac2_tests_predefined_tubes.cpp
index f6580fd56..0435b2290 100644
--- a/tests/core/domains/tube/codac2_tests_predefined_tubes.cpp
+++ b/tests/core/domains/tube/codac2_tests_predefined_tubes.cpp
@@ -174,7 +174,7 @@ SlicedTube<Interval> tube_test4()
 
   x.set({1,2}, {0,9});
   x.set({0.5,1.5}, {9,11});
-  x.set({-1,1}, {10.2}); // degenerate time interval
+  x.set({-1,1}, Interval(10.2)); // degenerate time interval
   x.set({-1.5,-0.5}, {11,12});
   x.set({-1,1}, {12,13});
   x.set({0.5,1.5}, {13,14});
diff --git a/tests/core/operators/codac2_tests_operators.cpp b/tests/core/operators/codac2_tests_operators.cpp
index 029463b82..17cb73fd1 100644
--- a/tests/core/operators/codac2_tests_operators.cpp
+++ b/tests/core/operators/codac2_tests_operators.cpp
@@ -22,7 +22,7 @@
 using namespace std;
 using namespace codac2;
 
-const double MAX_DOUBLE = std::numeric_limits<double>::max();
+//const double MAX_DOUBLE = std::numeric_limits<double>::max();
 
 void CHECK_bwd_trigo(const Interval& y, const Interval& x, const Interval& expected_x)
 {
@@ -475,4 +475,4 @@ TEST_CASE("Interval bwd modulo")
   ModOp::bwd({0.1,0.2}, x, p);
   CHECK(x == Interval::empty());
   CHECK(p == Interval::empty());
-}
\ No newline at end of file
+}