diff --git a/config-kwin.h.cmake b/config-kwin.h.cmake
index 951198ab36..7cf3c97e95 100644
--- a/config-kwin.h.cmake
+++ b/config-kwin.h.cmake
@@ -4,7 +4,6 @@
 #cmakedefine KWIN_BUILD_SCREENEDGES 1
 #cmakedefine KWIN_BUILD_KAPPMENU 1
 #cmakedefine KWIN_BUILD_ACTIVITIES 1
-#cmakedefine KWIN_BUILD_OXYGEN 1
 #define KWIN_NAME "${KWIN_NAME}"
 #define KWIN_CONFIG "${KWIN_NAME}rc"
 #define KWIN_VERSION_STRING "${KDE4WORKSPACE_VERSION}"
diff --git a/decorations.cpp b/decorations.cpp
index b15b733691..2e66f18a3b 100644
--- a/decorations.cpp
+++ b/decorations.cpp
@@ -40,9 +40,6 @@ DecorationPlugin::DecorationPlugin(QObject *parent)
     , m_disabled(false)
 {
     defaultPlugin = QStringLiteral("Oxygen");
-#ifndef KWIN_BUILD_OXYGEN
-    defaultPlugin = QStringLiteral("aurorae");
-#endif
 #ifdef KWIN_BUILD_DECORATIONS
     loadPlugin(QString());   // load the plugin specified in cfg file
     connect(factory(), &KDecorationFactory::recreateDecorations, this, &DecorationPlugin::recreateDecorations);