diff --git a/src/frontends/qt4/FloatPlacement.h b/src/frontends/qt4/FloatPlacement.h
index dca71b9dba..73ed4eb010 100644
--- a/src/frontends/qt4/FloatPlacement.h
+++ b/src/frontends/qt4/FloatPlacement.h
@@ -33,8 +33,8 @@ public:
 
 	/// \name DialogView inherited methods
 	//@{
-	InsetCode insetCode() { return FLOAT_CODE; }
-	FuncCode creationCode() { return LFUN_FLOAT_INSERT; }
+	InsetCode insetCode() const { return FLOAT_CODE; }
+	FuncCode creationCode() const { return LFUN_FLOAT_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	//@}
diff --git a/src/frontends/qt4/GuiBox.h b/src/frontends/qt4/GuiBox.h
index 25b6bfa9b3..320efdab2d 100644
--- a/src/frontends/qt4/GuiBox.h
+++ b/src/frontends/qt4/GuiBox.h
@@ -37,8 +37,8 @@ private Q_SLOTS:
 private:
 	/// \name DialogView inherited methods
 	//@{
-	InsetCode insetCode() { return BOX_CODE; }
-	FuncCode creationCode() { return LFUN_BOX_INSERT; }
+	InsetCode insetCode() const { return BOX_CODE; }
+	FuncCode creationCode() const { return LFUN_BOX_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	//@}
diff --git a/src/frontends/qt4/GuiERT.h b/src/frontends/qt4/GuiERT.h
index 8177b01b8d..18a1a9163c 100644
--- a/src/frontends/qt4/GuiERT.h
+++ b/src/frontends/qt4/GuiERT.h
@@ -28,8 +28,8 @@ public:
 private:
 	/// \name InsetParamsWidget inherited methods
 	//@{
-	InsetCode insetCode() { return ERT_CODE; }
-	FuncCode creationCode() { return LFUN_INSET_INSERT; }
+	InsetCode insetCode() const { return ERT_CODE; }
+	FuncCode creationCode() const { return LFUN_INSET_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	//@}
diff --git a/src/frontends/qt4/GuiInfo.h b/src/frontends/qt4/GuiInfo.h
index 5b8259ba7c..8911172c0a 100644
--- a/src/frontends/qt4/GuiInfo.h
+++ b/src/frontends/qt4/GuiInfo.h
@@ -31,8 +31,8 @@ public:
 private:
 	/// \name InsetParamsWidget inherited methods
 	//@{
-	InsetCode insetCode() { return INFO_CODE; }
-	FuncCode creationCode() { return LFUN_INFO_INSERT; }
+	InsetCode insetCode() const { return INFO_CODE; }
+	FuncCode creationCode() const { return LFUN_INFO_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	//@}
diff --git a/src/frontends/qt4/GuiVSpace.h b/src/frontends/qt4/GuiVSpace.h
index dd1d8830ba..f36a519c99 100644
--- a/src/frontends/qt4/GuiVSpace.h
+++ b/src/frontends/qt4/GuiVSpace.h
@@ -35,8 +35,8 @@ private Q_SLOTS:
 private:
 	/// \name InsetParamsWidget inherited methods
 	//@{
-	InsetCode insetCode() { return VSPACE_CODE; }
-	FuncCode creationCode() { return LFUN_INSET_INSERT; }
+	InsetCode insetCode() const { return VSPACE_CODE; }
+	FuncCode creationCode() const { return LFUN_INSET_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	//@}
diff --git a/src/frontends/qt4/InsetParamsWidget.h b/src/frontends/qt4/InsetParamsWidget.h
index 0e989c7e3f..d0fbd1157f 100644
--- a/src/frontends/qt4/InsetParamsWidget.h
+++ b/src/frontends/qt4/InsetParamsWidget.h
@@ -58,9 +58,9 @@ public:
 	/// This is a base class; destructor must exist and be virtual.
 	virtual ~InsetParamsWidget() {}
 	///
-	virtual InsetCode insetCode() = 0;
+	virtual InsetCode insetCode() const = 0;
 	///
-	virtual FuncCode creationCode() = 0;
+	virtual FuncCode creationCode() const = 0;
 	///
 	virtual void paramsToDialog(Inset const *) = 0;
 	///