diff --git a/docs/Constraints.rst b/docs/Constraints.rst
index 17326ea..c3fbc55 100644
--- a/docs/Constraints.rst
+++ b/docs/Constraints.rst
@@ -42,4 +42,4 @@ Example:
     variables.add_continuous_variable("e", -2, 2, 0.25, "", "")
     constraint.add_constraint("~a = b", True, True, False)
     constraint.add_constraint("a | b = c", True, True, False)
-    constraint.add_constraint("d + e <= 1", True, True, False)
\ No newline at end of file
+    constraint.add_constraint("d + e <= 1", True, True, False)
diff --git a/docs/ObjectiveFunction.rst b/docs/ObjectiveFunction.rst
index d2fd192..201b481 100644
--- a/docs/ObjectiveFunction.rst
+++ b/docs/ObjectiveFunction.rst
@@ -28,4 +28,4 @@ Example:
     b0 = variables.add_discrete_variable("b", [-1, 1, 3])
     c0 = variables.add_continuous_variable("c", -2, 2, 0.25, "", "")
     objective_function = ObjectiveFunction()
-    objective_function.add_objective_function(a0 + b0 * c0 + c0**2)
\ No newline at end of file
+    objective_function.add_objective_function(a0 + b0 * c0 + c0**2)
diff --git a/docs/Problem.rst b/docs/Problem.rst
index 2f1e6bb..1ba6996 100644
--- a/docs/Problem.rst
+++ b/docs/Problem.rst
@@ -46,4 +46,4 @@ Example:
     objective_function.add_objective_function(a0 + b0 * c0 + c0**2)
     problem = Problem()
     problem.create_problem(variables, constraint, objective_function)
-    pubo = problem.write_the_final_cost_function(lambda_strategy)
\ No newline at end of file
+    pubo = problem.write_the_final_cost_function(lambda_strategy)