diff --git a/src/plugins/projectexplorer/customtoolchain.cpp b/src/plugins/projectexplorer/customtoolchain.cpp
index 71b7df21b01..2c9a06412d1 100644
--- a/src/plugins/projectexplorer/customtoolchain.cpp
+++ b/src/plugins/projectexplorer/customtoolchain.cpp
@@ -209,7 +209,7 @@ IOutputParser *CustomToolChain::outputParser() const
     case Gcc: return new GccParser;
     case Clang: return new ClangParser;
     case LinuxIcc: return new LinuxIccParser;
-#if defined(QT_OS_WIN)
+#if defined(Q_OS_WIN)
     case Msvc: return new MsvcParser;
 #endif
     case Custom: return new CustomParser(m_customParserSettings);