diff --git a/src/plugins/debugger/debuggerkitinformation.cpp b/src/plugins/debugger/debuggerkitinformation.cpp
index 23550f4c8c7..10bc34d3ab0 100644
--- a/src/plugins/debugger/debuggerkitinformation.cpp
+++ b/src/plugins/debugger/debuggerkitinformation.cpp
@@ -280,7 +280,7 @@ QString DebuggerKitInformation::userOutput(const DebuggerItem &item)
     return binary.isEmpty() ? tr("%1 <None>").arg(name) : tr("%1 using \"%2\"").arg(name, binary);
 }
 
-KitInformation::ItemList DebuggerKitInformation::toUserOutput(Kit *k) const
+KitInformation::ItemList DebuggerKitInformation::toUserOutput(const Kit *k) const
 {
     return ItemList() << qMakePair(tr("Debugger"), DebuggerKitInformation::userOutput(DebuggerKitInformation::debuggerItem(k)));
 }
diff --git a/src/plugins/debugger/debuggerkitinformation.h b/src/plugins/debugger/debuggerkitinformation.h
index d4ecc33e4a5..eff4f385a6f 100644
--- a/src/plugins/debugger/debuggerkitinformation.h
+++ b/src/plugins/debugger/debuggerkitinformation.h
@@ -72,7 +72,7 @@ public:
 
     ProjectExplorer::KitConfigWidget *createConfigWidget(ProjectExplorer::Kit *k) const;
 
-    ItemList toUserOutput(ProjectExplorer::Kit *k) const;
+    ItemList toUserOutput(const ProjectExplorer::Kit *k) const;
     static QString userOutput(const DebuggerItem &item);
 
     static DebuggerItem debuggerItem(const ProjectExplorer::Kit *k);
diff --git a/src/plugins/projectexplorer/kit.cpp b/src/plugins/projectexplorer/kit.cpp
index 9929e8427ed..1f97cf0eed4 100644
--- a/src/plugins/projectexplorer/kit.cpp
+++ b/src/plugins/projectexplorer/kit.cpp
@@ -403,7 +403,7 @@ IOutputParser *Kit::createOutputParser() const
     return first;
 }
 
-QString Kit::toHtml()
+QString Kit::toHtml() const
 {
     QString rc;
     QTextStream str(&rc);
diff --git a/src/plugins/projectexplorer/kit.h b/src/plugins/projectexplorer/kit.h
index 031a0521a2d..c0fd94738cf 100644
--- a/src/plugins/projectexplorer/kit.h
+++ b/src/plugins/projectexplorer/kit.h
@@ -93,7 +93,7 @@ public:
     void addToEnvironment(Utils::Environment &env) const;
     IOutputParser *createOutputParser() const;
 
-    QString toHtml();
+    QString toHtml() const;
     Kit *clone(bool keepName = false) const;
     void copyFrom(const Kit *k);
 
diff --git a/src/plugins/projectexplorer/kitinformation.cpp b/src/plugins/projectexplorer/kitinformation.cpp
index 3f7028c3d7e..c2098601eec 100644
--- a/src/plugins/projectexplorer/kitinformation.cpp
+++ b/src/plugins/projectexplorer/kitinformation.cpp
@@ -92,7 +92,7 @@ KitConfigWidget *SysRootKitInformation::createConfigWidget(Kit *k) const
     return new Internal::SysRootInformationConfigWidget(k);
 }
 
-KitInformation::ItemList SysRootKitInformation::toUserOutput(Kit *k) const
+KitInformation::ItemList SysRootKitInformation::toUserOutput(const Kit *k) const
 {
     return ItemList() << qMakePair(tr("Sys Root"), sysRoot(k).toUserOutput());
 }
@@ -209,7 +209,7 @@ QString ToolChainKitInformation::displayNamePostfix(const Kit *k) const
     return tc ? tc->displayName() : QString();
 }
 
-KitInformation::ItemList ToolChainKitInformation::toUserOutput(Kit *k) const
+KitInformation::ItemList ToolChainKitInformation::toUserOutput(const Kit *k) const
 {
     ToolChain *tc = toolChain(k);
     return ItemList() << qMakePair(tr("Compiler"), tc ? tc->displayName() : tr("None"));
@@ -294,7 +294,7 @@ KitConfigWidget *DeviceTypeKitInformation::createConfigWidget(Kit *k) const
     return new Internal::DeviceTypeInformationConfigWidget(k);
 }
 
-KitInformation::ItemList DeviceTypeKitInformation::toUserOutput(Kit *k) const
+KitInformation::ItemList DeviceTypeKitInformation::toUserOutput(const Kit *k) const
 {
     Core::Id type = deviceTypeId(k);
     QString typeDisplayName = tr("Unknown device type");
@@ -392,7 +392,7 @@ QString DeviceKitInformation::displayNamePostfix(const Kit *k) const
     return dev.isNull() ? QString() : dev->displayName();
 }
 
-KitInformation::ItemList DeviceKitInformation::toUserOutput(Kit *k) const
+KitInformation::ItemList DeviceKitInformation::toUserOutput(const Kit *k) const
 {
     IDevice::ConstPtr dev = device(k);
     return ItemList() << qMakePair(tr("Device"), dev.isNull() ? tr("Unconfigured") : dev->displayName());
diff --git a/src/plugins/projectexplorer/kitinformation.h b/src/plugins/projectexplorer/kitinformation.h
index c206b0d4dd6..aa121fce558 100644
--- a/src/plugins/projectexplorer/kitinformation.h
+++ b/src/plugins/projectexplorer/kitinformation.h
@@ -64,7 +64,7 @@ public:
 
     KitConfigWidget *createConfigWidget(Kit *k) const;
 
-    ItemList toUserOutput(Kit *k) const;
+    ItemList toUserOutput(const Kit *k) const;
 
     static bool hasSysRoot(const Kit *k);
     static Utils::FileName sysRoot(const Kit *k);
@@ -110,7 +110,7 @@ public:
 
     QString displayNamePostfix(const Kit *k) const;
 
-    ItemList toUserOutput(Kit *k) const;
+    ItemList toUserOutput(const Kit *k) const;
 
     void addToEnvironment(const Kit *k, Utils::Environment &env) const;
     IOutputParser *createOutputParser(const Kit *k) const;
@@ -158,7 +158,7 @@ public:
 
     KitConfigWidget *createConfigWidget(Kit *k) const;
 
-    ItemList toUserOutput(Kit *k) const;
+    ItemList toUserOutput(const Kit *k) const;
 
     static const Core::Id deviceTypeId(const Kit *k);
     static void setDeviceTypeId(Kit *k, Core::Id type);
@@ -205,7 +205,7 @@ public:
 
     QString displayNamePostfix(const Kit *k) const;
 
-    ItemList toUserOutput(Kit *k) const;
+    ItemList toUserOutput(const Kit *k) const;
 
     static IDevice::ConstPtr device(const Kit *k);
     static Core::Id deviceId(const Kit *k);
diff --git a/src/plugins/projectexplorer/kitmanager.h b/src/plugins/projectexplorer/kitmanager.h
index f9c080e448e..cdd39d00576 100644
--- a/src/plugins/projectexplorer/kitmanager.h
+++ b/src/plugins/projectexplorer/kitmanager.h
@@ -81,7 +81,7 @@ public:
     // called on initial setup of a kit.
     virtual void setup(Kit *) { return; }
 
-    virtual ItemList toUserOutput(Kit *) const = 0;
+    virtual ItemList toUserOutput(const Kit *) const = 0;
 
     virtual KitConfigWidget *createConfigWidget(Kit *) const = 0;
 
diff --git a/src/plugins/qt4projectmanager/qmakekitinformation.cpp b/src/plugins/qt4projectmanager/qmakekitinformation.cpp
index 692e18ab757..4bd05d102a2 100644
--- a/src/plugins/qt4projectmanager/qmakekitinformation.cpp
+++ b/src/plugins/qt4projectmanager/qmakekitinformation.cpp
@@ -114,7 +114,7 @@ QmakeKitInformation::createConfigWidget(ProjectExplorer::Kit *k) const
     return new Internal::QmakeKitConfigWidget(k);
 }
 
-ProjectExplorer::KitInformation::ItemList QmakeKitInformation::toUserOutput(ProjectExplorer::Kit *k) const
+ProjectExplorer::KitInformation::ItemList QmakeKitInformation::toUserOutput(const ProjectExplorer::Kit *k) const
 {
     return ItemList() << qMakePair(tr("mkspec"), mkspec(k).toUserOutput());
 }
diff --git a/src/plugins/qt4projectmanager/qmakekitinformation.h b/src/plugins/qt4projectmanager/qmakekitinformation.h
index 62d836821ab..5450e0d6442 100644
--- a/src/plugins/qt4projectmanager/qmakekitinformation.h
+++ b/src/plugins/qt4projectmanager/qmakekitinformation.h
@@ -54,7 +54,7 @@ public:
 
     ProjectExplorer::KitConfigWidget *createConfigWidget(ProjectExplorer::Kit *k) const;
 
-    ItemList toUserOutput(ProjectExplorer::Kit *k) const;
+    ItemList toUserOutput(const ProjectExplorer::Kit *k) const;
 
     static void setMkspec(ProjectExplorer::Kit *k, const Utils::FileName &fn);
     static Utils::FileName mkspec(const ProjectExplorer::Kit *k);
diff --git a/src/plugins/qtsupport/qtkitinformation.cpp b/src/plugins/qtsupport/qtkitinformation.cpp
index a4643a838f7..def3b7ccb3f 100644
--- a/src/plugins/qtsupport/qtkitinformation.cpp
+++ b/src/plugins/qtsupport/qtkitinformation.cpp
@@ -114,7 +114,7 @@ QString QtKitInformation::displayNamePostfix(const ProjectExplorer::Kit *k) cons
 }
 
 ProjectExplorer::KitInformation::ItemList
-QtKitInformation::toUserOutput(ProjectExplorer::Kit *k) const
+QtKitInformation::toUserOutput(const ProjectExplorer::Kit *k) const
 {
     BaseQtVersion *version = qtVersion(k);
     return ItemList() << qMakePair(tr("Qt version"), version ? version->displayName() : tr("None"));
diff --git a/src/plugins/qtsupport/qtkitinformation.h b/src/plugins/qtsupport/qtkitinformation.h
index 5efca50a591..f783789f4c2 100644
--- a/src/plugins/qtsupport/qtkitinformation.h
+++ b/src/plugins/qtsupport/qtkitinformation.h
@@ -58,7 +58,7 @@ public:
 
     QString displayNamePostfix(const ProjectExplorer::Kit *k) const;
 
-    ItemList toUserOutput(ProjectExplorer::Kit *k) const;
+    ItemList toUserOutput(const ProjectExplorer::Kit *k) const;
 
     void addToEnvironment(const ProjectExplorer::Kit *k, Utils::Environment &env) const;
     ProjectExplorer::IOutputParser *createOutputParser(const ProjectExplorer::Kit *k) const;