diff --git a/libkdecorations/CMakeLists.txt b/libkdecorations/CMakeLists.txt
index aae3c8bfc1..4fa03bc1de 100644
--- a/libkdecorations/CMakeLists.txt
+++ b/libkdecorations/CMakeLists.txt
@@ -24,5 +24,4 @@ install( FILES
     kdecoration.h
     kdecorationfactory.h
     kcommondecoration.h
-    kdecorationbridge.h
     DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel )
diff --git a/libkdecorations/kdecoration.cpp b/libkdecorations/kdecoration.cpp
index 7ccbdb6c1b..780842e75b 100644
--- a/libkdecorations/kdecoration.cpp
+++ b/libkdecorations/kdecoration.cpp
@@ -658,4 +658,13 @@ void KDecorationOptions::setTitleButtonsRight(const QString& b)
     d->title_buttons_right = b;
 }
 
+extern "C" {
+
+int decoration_bridge_version()
+{
+    return KWIN_DECORATION_BRIDGE_API_VERSION;
+}
+
+}
+
 #include "kdecoration.moc"
diff --git a/libkdecorations/kdecoration.h b/libkdecorations/kdecoration.h
index 15d233e162..0959e74a14 100644
--- a/libkdecorations/kdecoration.h
+++ b/libkdecorations/kdecoration.h
@@ -47,6 +47,11 @@ DEALINGS IN THE SOFTWARE.
         KWIN_EXPORT int decoration_version() { return KWIN_DECORATION_API_VERSION; } \
     }
 
+#define KWIN_DECORATION_BRIDGE_API_VERSION 1
+extern "C" {
+    int decoration_bridge_version();
+}
+
 class KConfig;
 
 /** @defgroup kdecoration KWin decorations library */
diff --git a/libkdecorations/kdecorationbridge.h b/libkdecorations/kdecorationbridge.h
index 7e1f2644df..a050e55acc 100644
--- a/libkdecorations/kdecorationbridge.h
+++ b/libkdecorations/kdecorationbridge.h
@@ -28,18 +28,12 @@ DEALINGS IN THE SOFTWARE.
 #include "kdecoration.h"
 #include <QWidget>
 
-/** @addtogroup kdecoration */
-/** @{ */
-
 /**
  * @short Bridge class for communicating between decorations and KWin core.
  *
  * This class allows communication between decorations and KWin core while allowing
  * to keep binary compatibility. Decorations do not need to use it directly at all.
  */
-// This class is supposed to keep binary compatibility, just like KDecoration.
-// Extending should be done the same way, i.e. inheriting KDecorationBridge2 from it
-// and adding new functionality there.
 class KDecorationBridge : public KDecorationDefines
 {
 public:
@@ -91,7 +85,7 @@ public:
     virtual void grabXServer(bool grab) = 0;
 };
 
-class KWIN_EXPORT KDecorationBridgeUnstable
+class KDecorationBridgeUnstable
     : public KDecorationBridge
 {
 public:
@@ -117,6 +111,4 @@ public:
     virtual WindowOperation buttonToWindowOperation(Qt::MouseButtons button) = 0;
 };
 
-/** @} */
-
 #endif