diff --git a/src/accounts/xmpp/XmppInfoPlugin.cpp b/src/accounts/xmpp/XmppInfoPlugin.cpp
index 56397580d..fdeff5d8b 100644
--- a/src/accounts/xmpp/XmppInfoPlugin.cpp
+++ b/src/accounts/xmpp/XmppInfoPlugin.cpp
@@ -25,6 +25,11 @@
 #include "utils/Logger.h"
 #include "TomahawkSettings.h"
 
+// Forward Declarations breaking QSharedPointer
+#if QT_VERSION < QT_VERSION_CHECK( 5, 0, 0 )
+    #include "Source.h"
+#endif
+
 
 // remove now playing status after PAUSE_TIMEOUT seconds
 static const int PAUSE_TIMEOUT = 10;
diff --git a/src/infoplugins/linux/mpris/MprisPlugin.h b/src/infoplugins/linux/mpris/MprisPlugin.h
index a5997cf55..13cf210b8 100644
--- a/src/infoplugins/linux/mpris/MprisPlugin.h
+++ b/src/infoplugins/linux/mpris/MprisPlugin.h
@@ -27,6 +27,11 @@
 
 #include "../../InfoPluginDllMacro.h"
 
+// Forward Declarations breaking QSharedPointer
+#if QT_VERSION < QT_VERSION_CHECK( 5, 0, 0 )
+    #include "PlaylistInterface.h"
+#endif
+
 
 #include <QObject>
 #include <QVariant>
diff --git a/src/tomahawk/sourcetree/items/SourceTreeItem.cpp b/src/tomahawk/sourcetree/items/SourceTreeItem.cpp
index f042b561a..768a2f0cd 100644
--- a/src/tomahawk/sourcetree/items/SourceTreeItem.cpp
+++ b/src/tomahawk/sourcetree/items/SourceTreeItem.cpp
@@ -21,6 +21,12 @@
 #include "audio/AudioEngine.h"
 #include "utils/Logger.h"
 
+// Forward Declarations breaking QSharedPointer
+#if QT_VERSION < QT_VERSION_CHECK( 5, 0, 0 )
+    #include "Query.h"
+#endif
+
+
 using namespace Tomahawk;