diff --git a/src/plugins/projectexplorer/abstractmsvctoolchain.cpp b/src/plugins/projectexplorer/abstractmsvctoolchain.cpp
index 94b17e65cfb..cd86b0d1e85 100644
--- a/src/plugins/projectexplorer/abstractmsvctoolchain.cpp
+++ b/src/plugins/projectexplorer/abstractmsvctoolchain.cpp
@@ -161,6 +161,7 @@ bool AbstractMsvcToolChain::canClone() const
 
 QByteArray AbstractMsvcToolChain::msvcPredefinedMacros(const Utils::Environment& env) const
 {
+    Q_UNUSED(env);
     QByteArray predefinedMacros = "#define __MSVCRT__\n"
             "#define __w64\n"
             "#define __int64 long long\n"
diff --git a/src/plugins/projectexplorer/wincetoolchain.cpp b/src/plugins/projectexplorer/wincetoolchain.cpp
index a480e03181c..9e42b4aeaa7 100644
--- a/src/plugins/projectexplorer/wincetoolchain.cpp
+++ b/src/plugins/projectexplorer/wincetoolchain.cpp
@@ -453,6 +453,7 @@ QList<ToolChain *> WinCEToolChainFactory::autoDetect()
 
 QString WinCEToolChain::autoDetectCdbDebugger(QStringList *checkedDirectories /* = 0 */)
 {
+    Q_UNUSED(checkedDirectories);
     return QString();
 }