diff --git a/apps/probability/law/binomial_law.cpp b/apps/probability/law/binomial_law.cpp
index 82eeef682..dc7108c0c 100644
--- a/apps/probability/law/binomial_law.cpp
+++ b/apps/probability/law/binomial_law.cpp
@@ -37,10 +37,6 @@ float BinomialLaw::xMax() {
   return max + k_displayRightMarginRatio*(max - min);
 }
 
-float BinomialLaw::yMin() {
-  return -k_displayBottomMarginRatio*yMax();
-}
-
 float BinomialLaw::yMax() {
   int maxAbscissa = m_parameter2 < 1.0f ? (m_parameter1+1)*m_parameter2 : m_parameter1;
   float result = evaluateAtAbscissa(maxAbscissa);
diff --git a/apps/probability/law/binomial_law.h b/apps/probability/law/binomial_law.h
index ccd90e701..a92a1882a 100644
--- a/apps/probability/law/binomial_law.h
+++ b/apps/probability/law/binomial_law.h
@@ -12,7 +12,6 @@ public:
   Type type() const override { return Type::Binomial; }
   bool isContinuous() const override { return false; }
   float xMin() override;
-  float yMin() override;
   float xMax() override;
   float yMax() override;
   I18n::Message parameterNameAtIndex(int index) override;
diff --git a/apps/probability/law/exponential_law.cpp b/apps/probability/law/exponential_law.cpp
index 152c6554f..43da100f3 100644
--- a/apps/probability/law/exponential_law.cpp
+++ b/apps/probability/law/exponential_law.cpp
@@ -8,10 +8,6 @@ float ExponentialLaw::xMin() {
   return - k_displayLeftMarginRatio * xMax();
 }
 
-float ExponentialLaw::yMin() {
-  return -k_displayBottomMarginRatio * yMax();
-}
-
 float ExponentialLaw::xMax() {
   assert(m_parameter1 != 0.0f);
   float result = 5.0f/m_parameter1;
diff --git a/apps/probability/law/exponential_law.h b/apps/probability/law/exponential_law.h
index 688070a71..0b9443d03 100644
--- a/apps/probability/law/exponential_law.h
+++ b/apps/probability/law/exponential_law.h
@@ -13,7 +13,6 @@ public:
   Type type() const override { return Type::Exponential; }
   bool isContinuous() const override { return true; }
   float xMin() override;
-  float yMin() override;
   float xMax() override;
   float yMax() override;
   I18n::Message parameterNameAtIndex(int index) override {
diff --git a/apps/probability/law/law.cpp b/apps/probability/law/law.cpp
index 241e2ae62..73404865b 100644
--- a/apps/probability/law/law.cpp
+++ b/apps/probability/law/law.cpp
@@ -130,4 +130,8 @@ double Law::evaluateAtDiscreteAbscissa(int k) const {
   return 0.0;
 }
 
+float Law::yMin() {
+  return -k_displayBottomMarginRatio * yMax();
+}
+
 }
diff --git a/apps/probability/law/law.h b/apps/probability/law/law.h
index 6ebd6f6f3..fefc8d23d 100644
--- a/apps/probability/law/law.h
+++ b/apps/probability/law/law.h
@@ -41,9 +41,11 @@ protected:
   static_assert(Constant::LargeNumberOfSignificantDigits == 7, "k_maxProbability is ill-defined compared to LargeNumberOfSignificantDigits");
   constexpr static double k_maxProbability = 0.9999995;
   constexpr static float k_displayTopMarginRatio = 0.05f;
-  constexpr static float k_displayBottomMarginRatio = 0.2f;
   constexpr static float k_displayLeftMarginRatio = 0.05f;
   constexpr static float k_displayRightMarginRatio = 0.05f;
+private:
+  constexpr static float k_displayBottomMarginRatio = 0.2f;
+  float yMin() override;
 };
 
 }
diff --git a/apps/probability/law/normal_law.cpp b/apps/probability/law/normal_law.cpp
index 4e8a51d03..c02cbbcaf 100644
--- a/apps/probability/law/normal_law.cpp
+++ b/apps/probability/law/normal_law.cpp
@@ -7,10 +7,6 @@
 
 namespace Probability {
 
-float NormalLaw::yMin() {
-  return - k_displayBottomMarginRatio * yMax();
-}
-
 float NormalLaw::yMax() {
   float maxAbscissa = m_parameter1;
   float result = evaluateAtAbscissa(maxAbscissa);
diff --git a/apps/probability/law/normal_law.h b/apps/probability/law/normal_law.h
index 77ebd4705..e75cae0db 100644
--- a/apps/probability/law/normal_law.h
+++ b/apps/probability/law/normal_law.h
@@ -12,7 +12,6 @@ public:
   Type type() const override { return Type::Normal; }
   bool isContinuous() const override { return true; }
   float xMin() override { return xExtremum(true); }
-  float yMin() override;
   float xMax() override { return xExtremum(false); }
   float yMax() override;
   I18n::Message parameterNameAtIndex(int index) override;
diff --git a/apps/probability/law/poisson_law.cpp b/apps/probability/law/poisson_law.cpp
index 02e801f76..30394ddbc 100644
--- a/apps/probability/law/poisson_law.cpp
+++ b/apps/probability/law/poisson_law.cpp
@@ -9,10 +9,6 @@ float PoissonLaw::xMin() {
   return -k_displayLeftMarginRatio * xMax();
 }
 
-float PoissonLaw::yMin() {
-  return - k_displayBottomMarginRatio * yMax();
-}
-
 float PoissonLaw::xMax() {
   assert(m_parameter1 != 0);
   return (m_parameter1 + 5.0f * std::sqrt(m_parameter1)) * (1.0f + k_displayRightMarginRatio);
diff --git a/apps/probability/law/poisson_law.h b/apps/probability/law/poisson_law.h
index 6b8708c46..da995a8f7 100644
--- a/apps/probability/law/poisson_law.h
+++ b/apps/probability/law/poisson_law.h
@@ -12,7 +12,6 @@ public:
   Type type() const override { return Type::Poisson; }
   bool isContinuous() const override { return false; }
   float xMin() override;
-  float yMin() override;
   float xMax() override;
   float yMax() override;
   I18n::Message parameterNameAtIndex(int index) override {
diff --git a/apps/probability/law/uniform_law.cpp b/apps/probability/law/uniform_law.cpp
index 8a0e072c1..8f271fbc6 100644
--- a/apps/probability/law/uniform_law.cpp
+++ b/apps/probability/law/uniform_law.cpp
@@ -32,10 +32,6 @@ float UniformLaw::xMin() {
   return m_parameter1 - 0.6f * (m_parameter2 - m_parameter1);
 }
 
-float UniformLaw::yMin() {
-  return -k_displayBottomMarginRatio * yMax();
-}
-
 float UniformLaw::xMax() {
   if (m_parameter2 - m_parameter1 < FLT_EPSILON) {
     return m_parameter1 + 1.0f;
diff --git a/apps/probability/law/uniform_law.h b/apps/probability/law/uniform_law.h
index fc10786e4..a2ab7160c 100644
--- a/apps/probability/law/uniform_law.h
+++ b/apps/probability/law/uniform_law.h
@@ -12,7 +12,6 @@ public:
   Type type() const override { return Type::Uniform; }
   bool isContinuous() const override { return true; }
   float xMin() override;
-  float yMin() override;
   float xMax() override;
   float yMax() override;
   I18n::Message parameterNameAtIndex(int index) override;