diff --git a/src/constants.py b/src/constants.py
new file mode 100644
index 0000000..bfe8dd5
--- /dev/null
+++ b/src/constants.py
@@ -0,0 +1 @@
+SCALING_FACTOR_FOR_EXPECTATION_IN_PLOT = 1.05
diff --git a/src/probabilistic_model/distributions/distributions.py b/src/probabilistic_model/distributions/distributions.py
index 0c0c75b..5d54691 100644
--- a/src/probabilistic_model/distributions/distributions.py
+++ b/src/probabilistic_model/distributions/distributions.py
@@ -10,6 +10,7 @@
 from random_events.interval import *
 from typing_extensions import Union, Iterable, Any, Self, Dict, List, Tuple, DefaultDict
 import plotly.graph_objects as go
+from ...constants import SCALING_FACTOR_FOR_EXPECTATION_IN_PLOT
 
 
 from ..probabilistic_model import ProbabilisticModel, OrderType, MomentType, CenterType, FullEvidenceType
@@ -397,7 +398,7 @@ def moment(self, order: OrderType, center: CenterType) -> MomentType:
 
     def plot_expectation(self) -> List:
         expectation = self.expectation([self.variable])[self.variable]
-        height = max(self.probabilities.values()) * 1.1
+        height = max(self.probabilities.values()) * SCALING_FACTOR_FOR_EXPECTATION_IN_PLOT
         return [go.Scatter(x=[expectation, expectation], y=[0, height], mode="lines+markers", name="Expectation")]
 
     def plot(self) -> List[go.Bar]:
@@ -514,9 +515,11 @@ def plot(self) -> List:
                                y=[0, 0, self.density_cap, 0, 0], mode="lines", name="PDF")
         cdf_trace = go.Scatter(x=[lower_border, self.location, self.location, upper_border],
                                y=[0, 0, 1, 1], mode="lines", name="CDF")
-        expectation_trace = go.Scatter(x=[self.location, self.location], y=[0, self.density_cap * 1.05],
+        expectation_trace = go.Scatter(x=[self.location, self.location], y=[0, self.density_cap *
+                                                                            SCALING_FACTOR_FOR_EXPECTATION_IN_PLOT],
                                        mode="lines+markers", name="Expectation")
-        mode_trace = go.Scatter(x=[self.location, self.location], y=[0, self.density_cap * 1.05],
+        mode_trace = go.Scatter(x=[self.location, self.location], y=[0, self.density_cap *
+                                                                     SCALING_FACTOR_FOR_EXPECTATION_IN_PLOT],
                                 mode="lines+markers", name="Mode")
         return [pdf_trace, cdf_trace, expectation_trace, mode_trace]
 
diff --git a/src/probabilistic_model/utils.py b/src/probabilistic_model/utils.py
index d58cd29..da68713 100644
--- a/src/probabilistic_model/utils.py
+++ b/src/probabilistic_model/utils.py
@@ -3,10 +3,6 @@
 import types
 
 
-if TYPE_CHECKING:
-    from .distributions.distributions import UnivariateDistribution
-
-
 def type_converter(abstract_type: Type, package: types.ModuleType):
     """
     Convert a type to a different type from a target sub-package that inherits from this type.