diff --git a/gui/include/SqpApplication.h b/gui/include/SqpApplication.h
index 2d2944a..daa7440 100644
--- a/gui/include/SqpApplication.h
+++ b/gui/include/SqpApplication.h
@@ -36,9 +36,9 @@ public:
     void initialize();
 
     /// Accessors for the differents sciqlop controllers
-    DataSourceController &dataSourceController() const noexcept;
-    VariableController &variableController() const noexcept;
-    VisualizationController &visualizationController() const noexcept;
+    DataSourceController &dataSourceController() noexcept;
+    VariableController &variableController() noexcept;
+    VisualizationController &visualizationController() noexcept;
 
 private:
     class SqpApplicationPrivate;
diff --git a/gui/src/SqpApplication.cpp b/gui/src/SqpApplication.cpp
index 5d6c7d8..dc45d7f 100644
--- a/gui/src/SqpApplication.cpp
+++ b/gui/src/SqpApplication.cpp
@@ -75,17 +75,17 @@ void SqpApplication::initialize()
 {
 }
 
-DataSourceController &SqpApplication::dataSourceController() const noexcept
+DataSourceController &SqpApplication::dataSourceController() noexcept
 {
     return *impl->m_DataSourceController;
 }
 
-VariableController &SqpApplication::variableController() const noexcept
+VariableController &SqpApplication::variableController() noexcept
 {
     return *impl->m_VariableController;
 }
 
-VisualizationController &SqpApplication::visualizationController() const noexcept
+VisualizationController &SqpApplication::visualizationController() noexcept
 {
     return *impl->m_VisualizationController;
 }