diff --git a/docs/conf.py b/docs/conf.py
index b964c5fc3..9331a2f41 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -24,7 +24,7 @@
 author = "RocketPy Team"
 
 # The full version, including alpha/beta/rc tags
-release = "1.1.0"
+release = "1.1.1"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/docs/user/installation.rst b/docs/user/installation.rst
index 25a224c72..8454156ca 100644
--- a/docs/user/installation.rst
+++ b/docs/user/installation.rst
@@ -19,7 +19,7 @@ If you want to choose a specific version to guarantee compatibility, you may ins
 
 .. code-block:: shell
 
-    pip install rocketpy==1.1.0
+    pip install rocketpy==1.1.1
 
 
 Optional Installation Method: ``conda``
diff --git a/rocketpy/rocket/rocket.py b/rocketpy/rocket/rocket.py
index fd69f25d2..947c82acd 100644
--- a/rocketpy/rocket/rocket.py
+++ b/rocketpy/rocket/rocket.py
@@ -543,7 +543,6 @@ def evaluate_static_margin(self):
         self.static_margin.set_source(
             lambda time: (self.center_of_mass(time) - self.cp_position(0))
             / (2 * self.radius)
-            * self._csys
         )
         # Change sign if coordinate system is upside down
         self.static_margin *= self._csys
diff --git a/setup.py b/setup.py
index 414a27b74..85e184a02 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
 
 setuptools.setup(
     name="rocketpy",
-    version="1.1.0",
+    version="1.1.1",
     install_requires=necessary_require,
     extras_require={
         "env_analysis": env_analysis_require,
diff --git a/tests/test_rocket.py b/tests/test_rocket.py
index 160ab9aa4..acb131e1c 100644
--- a/tests/test_rocket.py
+++ b/tests/test_rocket.py
@@ -25,9 +25,8 @@ def test_aero_surfaces_infos(
     assert calisto_trapezoidal_fins.draw() == None
 
 
-@patch("matplotlib.pyplot.show")
 def test_coordinate_system_orientation(
-    mock_show, calisto_nose_cone, cesaroni_m1670, calisto_trapezoidal_fins
+    calisto_nose_cone, cesaroni_m1670, calisto_trapezoidal_fins
 ):
     """Test if the coordinate system orientation is working properly. This test
     basically checks if the static margin is the same for the same rocket with
@@ -35,8 +34,6 @@ def test_coordinate_system_orientation(
 
     Parameters
     ----------
-    mock_show : mock
-        Mock of matplotlib.pyplot.show
     calisto_nose_cone : rocketpy.NoseCone
         Nose cone of the rocket
     cesaroni_m1670 : rocketpy.SolidMotor
@@ -51,7 +48,7 @@ def test_coordinate_system_orientation(
         burn_time=3.9,
         dry_mass=1.815,
         dry_inertia=(0.125, 0.125, 0.002),
-        center_of_dry_mass_position=0.317,
+        center_of_dry_mass_position=-0.317,
         nozzle_position=0,
         grain_number=5,
         grain_density=1815,
@@ -60,7 +57,7 @@ def test_coordinate_system_orientation(
         grain_separation=5 / 1000,
         grain_outer_radius=33 / 1000,
         grain_initial_height=120 / 1000,
-        grains_center_of_mass_position=0.397,
+        grains_center_of_mass_position=-0.397,
         grain_initial_inner_radius=15 / 1000,
         interpolation_method="linear",
         coordinate_system_orientation="combustion_chamber_to_nozzle",
@@ -81,7 +78,7 @@ def test_coordinate_system_orientation(
     rocket_tail_to_nose.aerodynamic_surfaces.add(calisto_nose_cone, 1.160)
     rocket_tail_to_nose.aerodynamic_surfaces.add(calisto_trapezoidal_fins, -1.168)
 
-    static_margin_tail_to_nose = rocket_tail_to_nose.static_margin(0)
+    static_margin_tail_to_nose = rocket_tail_to_nose.static_margin
 
     rocket_nose_to_tail = Rocket(
         radius=0.0635,
@@ -98,13 +95,9 @@ def test_coordinate_system_orientation(
     rocket_nose_to_tail.aerodynamic_surfaces.add(calisto_nose_cone, -1.160)
     rocket_nose_to_tail.aerodynamic_surfaces.add(calisto_trapezoidal_fins, 1.168)
 
-    static_margin_nose_to_tail = rocket_nose_to_tail.static_margin(0)
+    static_margin_nose_to_tail = rocket_nose_to_tail.static_margin
 
-    assert (
-        rocket_tail_to_nose.all_info() == None
-        or rocket_nose_to_tail.all_info() == None
-        or not abs(static_margin_tail_to_nose - static_margin_nose_to_tail) < 0.0001
-    )
+    assert np.array_equal(static_margin_tail_to_nose, static_margin_nose_to_tail)
 
 
 @patch("matplotlib.pyplot.show")