diff --git a/core/area.cpp b/core/area.cpp
index add29a9e2..b06f2464a 100644
--- a/core/area.cpp
+++ b/core/area.cpp
@@ -11,6 +11,7 @@
 
 #include <QtCore/QRect>
 #include <QtGui/QPolygonF>
+#include <kdebug.h>
 
 #include <math.h>
 
diff --git a/core/area.h b/core/area.h
index ee42ae234..dba746064 100644
--- a/core/area.h
+++ b/core/area.h
@@ -14,12 +14,11 @@
 #include <QtGui/QColor>
 #include <QtGui/QPainterPath>
 
-#include <kdebug.h>
-
 #include <okular/core/okular_export.h>
 
 class QPolygonF;
 class QRect;
+class kdbgstream;
 
 namespace Okular {
 
diff --git a/core/misc.cpp b/core/misc.cpp
index d55814ecc..60b67d442 100644
--- a/core/misc.cpp
+++ b/core/misc.cpp
@@ -9,6 +9,8 @@
 
 #include "core/misc.h"
 
+#include <kdebug.h>
+
 using namespace Okular;
 
 class TextSelection::Private
diff --git a/ui/pageview.h b/ui/pageview.h
index f9fb186b5..d01409631 100644
--- a/ui/pageview.h
+++ b/ui/pageview.h
@@ -28,6 +28,7 @@
 
 class KAction;
 class KActionCollection;
+class KUrl;
 
 namespace Okular {
 class Document;