diff --git a/src/plugins/sceneformats/assimp/ailoaderiostream.cpp b/src/plugins/sceneformats/assimp/ailoaderiostream.cpp
index 0ee44863f..c130592c0 100644
--- a/src/plugins/sceneformats/assimp/ailoaderiostream.cpp
+++ b/src/plugins/sceneformats/assimp/ailoaderiostream.cpp
@@ -66,8 +66,11 @@ size_t AiLoaderIOStream::Read( void* pvBuffer, size_t pSize, size_t pCount)
         fprintf(stderr, "AI read error: %s\n", qPrintable(m_device->errorString()));
     if ((pSize * pCount) != res) // AI will treat as error
     {
+        long unsigned int pSizeP = pSize;
+        long unsigned int pCountP = pCount;
+        long unsigned int pRes = res;
         fprintf(stderr, "read mismatch requested size: %lu x count: %lu = %lu != %lu actuall read\n",
-                pSize, pCount, (pSize * pCount), res);
+                pSizeP, pCountP, (pSizeP * pCountP), pRes);
     }
     return res;
 }
diff --git a/src/private/qfactoryloader_p.h b/src/private/qfactoryloader_p.h
index 57432ddd3..17c437222 100644
--- a/src/private/qfactoryloader_p.h
+++ b/src/private/qfactoryloader_p.h
@@ -63,6 +63,10 @@ QT_BEGIN_NAMESPACE
 
 class QFactoryLoaderPrivate;
 
+#ifdef Q_WS_X11
+class QLibraryPrivate;
+#endif
+
 class Q_CORE_EXPORT QFactoryLoader : public QObject
 {
     Q_OBJECT