diff --git a/apps/graph/app.cpp b/apps/graph/app.cpp
index 91393ddab..eb4e2c6a4 100644
--- a/apps/graph/app.cpp
+++ b/apps/graph/app.cpp
@@ -9,7 +9,7 @@ namespace Graph {
 
 App::App(Container * container, Context * context) :
   FunctionApp(container, &m_inputViewController, I18n::Message::FunctionApp, I18n::Message::FunctionAppCapital, ImageStore::GraphIcon),
-  m_functionStore(CartesianFunctionStore()),
+  m_functionStore(),
   m_xContext(VariableContext('x', context)),
   m_listController(ListController(&m_listFooter, &m_functionStore, &m_listHeader, &m_listFooter)),
   m_listFooter(ButtonRowController(&m_listHeader, &m_listController, &m_listController, ButtonRowController::Position::Bottom, ButtonRowController::Style::EmbossedGrey)),
diff --git a/apps/graph/cartesian_function_store.cpp b/apps/graph/cartesian_function_store.cpp
index fd7fc373c..bb87c6334 100644
--- a/apps/graph/cartesian_function_store.cpp
+++ b/apps/graph/cartesian_function_store.cpp
@@ -40,7 +40,7 @@ CartesianFunction * CartesianFunctionStore::addEmptyFunction() {
   assert(m_numberOfFunctions < k_maxNumberOfFunctions);
   const char * name = firstAvailableName();
   KDColor color = firstAvailableColor();
-  CartesianFunction addedFunction = CartesianFunction(name, color);
+  CartesianFunction addedFunction(name, color);
   m_functions[m_numberOfFunctions] = addedFunction;
   CartesianFunction * result = &m_functions[m_numberOfFunctions];
   m_numberOfFunctions++;
@@ -57,7 +57,8 @@ void CartesianFunctionStore::removeFunction(Shared::Function * f) {
   for (int j = i; j<m_numberOfFunctions; j++) {
     m_functions[j] = m_functions[j+1];
   }
-  m_functions[m_numberOfFunctions] = CartesianFunction("", KDColorBlack);
+  CartesianFunction emptyFunction("", KDColorBlack);
+  m_functions[m_numberOfFunctions] = emptyFunction;
 }
 
 int CartesianFunctionStore::maxNumberOfFunctions() {
@@ -102,7 +103,8 @@ const KDColor  CartesianFunctionStore::firstAvailableColor() {
 
 void CartesianFunctionStore::removeAll() {
   for (int i = 0; i < m_numberOfFunctions; i++) {
-    m_functions[i] = CartesianFunction("", KDColorBlack);
+    CartesianFunction emptyFunction("", KDColorBlack);
+    m_functions[i] = emptyFunction;
   }
   m_numberOfFunctions = 0;
   addEmptyFunction();
diff --git a/apps/sequence/sequence.cpp b/apps/sequence/sequence.cpp
index 0bbc133ef..ef168865c 100644
--- a/apps/sequence/sequence.cpp
+++ b/apps/sequence/sequence.cpp
@@ -62,6 +62,17 @@ Sequence::~Sequence() {
   }
 }
 
+Sequence& Sequence::operator=(const Sequence& other) {
+  // Self-assignment is benign
+  Function::operator=(other);
+  setType(other.m_type);
+  setFirstInitialConditionContent(other.m_firstInitialConditionText);
+  setSecondInitialConditionContent(other.m_secondInitialConditionText);
+  m_indexBuffer[0] = other.m_indexBuffer[0];
+  m_indexBuffer[1] = other.m_indexBuffer[1];
+  return *this;
+}
+
 const char * Sequence::firstInitialConditionText() {
   return m_firstInitialConditionText;
 }
diff --git a/apps/sequence/sequence.h b/apps/sequence/sequence.h
index febf9150a..e69b92b46 100644
--- a/apps/sequence/sequence.h
+++ b/apps/sequence/sequence.h
@@ -14,6 +14,10 @@ public:
   };
   Sequence(const char * text = nullptr, KDColor color = KDColorBlack);
   ~Sequence();
+  Sequence& operator=(const Sequence& other);
+  Sequence& operator=(Sequence&& other) = delete;
+  Sequence(const Sequence& other) = delete;
+  Sequence(Sequence&& other) = delete;
   Type type();
   void setType(Type type);
   const char * firstInitialConditionText();
diff --git a/apps/sequence/sequence_store.cpp b/apps/sequence/sequence_store.cpp
index adbb9f642..409962fb8 100644
--- a/apps/sequence/sequence_store.cpp
+++ b/apps/sequence/sequence_store.cpp
@@ -33,7 +33,7 @@ Sequence * SequenceStore::addEmptyFunction() {
   assert(m_numberOfFunctions < k_maxNumberOfSequences);
   const char * name = firstAvailableName();
   KDColor color = firstAvailableColor();
-  Sequence addedSequence = Sequence(name, color);
+  Sequence addedSequence(name, color);
   m_sequences[m_numberOfFunctions] = addedSequence;
   Sequence * result = &m_sequences[m_numberOfFunctions];
   m_numberOfFunctions++;
@@ -50,7 +50,8 @@ void SequenceStore::removeFunction(Shared::Function * f) {
   for (int j = i; j<m_numberOfFunctions; j++) {
     m_sequences[j] = m_sequences[j+1];
   }
-  m_sequences[m_numberOfFunctions] = Sequence("", KDColorBlack);
+  Sequence emptySequence("", KDColorBlack);
+  m_sequences[m_numberOfFunctions] = emptySequence;
 }
 
 int SequenceStore::maxNumberOfFunctions() {
@@ -95,7 +96,8 @@ const KDColor SequenceStore::firstAvailableColor() {
 
 void SequenceStore::removeAll() {
   for (int i = 0; i < m_numberOfFunctions; i++) {
-    m_sequences[i] = Sequence("", KDColorBlack);
+    Sequence emptySequence("", KDColorBlack);
+    m_sequences[i] = emptySequence;
   }
   m_numberOfFunctions = 0;
 }
diff --git a/apps/shared/function.cpp b/apps/shared/function.cpp
index 5c26d11fb..87553b913 100644
--- a/apps/shared/function.cpp
+++ b/apps/shared/function.cpp
@@ -6,16 +6,25 @@ using namespace Poincare;
 
 namespace Shared {
 
-Function::Function(const char * text, KDColor color) :
+Function::Function(const char * name, KDColor color) :
   m_expression(nullptr),
   m_text{0},
-  m_name(text),
+  m_name(name),
   m_color(color),
   m_layout(nullptr),
   m_active(true)
 {
 }
 
+Function& Function::operator=(const Function& other) {
+  // Self-assignment is benign
+  m_color = other.m_color;
+  m_name = other.m_name;
+  m_active = other.m_active;
+  setContent(other.m_text);
+  return *this;
+}
+
 void Function::setContent(const char * c) {
   strlcpy(m_text, c, sizeof(m_text));
   if (m_expression != nullptr) {
diff --git a/apps/shared/function.h b/apps/shared/function.h
index c9a8d82a8..3d7bca654 100644
--- a/apps/shared/function.h
+++ b/apps/shared/function.h
@@ -9,8 +9,12 @@ namespace Shared {
 
 class Function {
 public:
-  Function(const char * text = nullptr, KDColor color = KDColorBlack);
-  ~Function(); // Delete expression and layout, if needed
+  Function(const char * name = nullptr, KDColor color = KDColorBlack);
+  virtual ~Function(); // Delete expression and layout, if needed
+  Function& operator=(const Function& other);
+  Function& operator=(Function&& other) = delete;
+  Function(const Function& other) = delete;
+  Function(Function&& other) = delete;
   const char * text();
   const char * name();
   KDColor color() const { return m_color; }