diff --git a/src/plugins/cpptools/cppprojects.cpp b/src/plugins/cpptools/cppprojects.cpp
index bf1b532a949373fae27f3b508451fb05bbcdacef..b58cb739b3d82bc6587e307c8a52ed561ca090e1 100644
--- a/src/plugins/cpptools/cppprojects.cpp
+++ b/src/plugins/cpptools/cppprojects.cpp
@@ -556,8 +556,6 @@ QStringList CompilerOptionsBuilder::createDefineOptions(const QByteArray &define
         QString arg = option + QLatin1String(str.left(hasValue ? spaceIdx : str.size()) + '=');
         if (hasValue)
             arg += QLatin1String(str.mid(spaceIdx + 1));
-        arg = arg.replace(QLatin1String("\\\""), QLatin1String("\""));
-        arg = arg.replace(QLatin1String("\""), QLatin1String(""));
         if (!result.contains(arg))
             result.append(arg);
     }