diff --git a/src/servers/registrar/ClipboardHandler.cpp b/src/servers/registrar/ClipboardHandler.cpp
index a156abd1d7..e188238c3d 100644
--- a/src/servers/registrar/ClipboardHandler.cpp
+++ b/src/servers/registrar/ClipboardHandler.cpp
@@ -9,6 +9,8 @@
 #include "Clipboard.h"
 #include "ClipboardHandler.h"
 
+using namespace BPrivate;
+
 /*!
 	\class ClipboardHandler
 	\brief Handles all clipboard related requests.
diff --git a/src/servers/registrar/MIMEManager.cpp b/src/servers/registrar/MIMEManager.cpp
index 451c98f8d6..d6da187852 100644
--- a/src/servers/registrar/MIMEManager.cpp
+++ b/src/servers/registrar/MIMEManager.cpp
@@ -15,6 +15,7 @@
 #include <string>
 
 using namespace std;
+using namespace BPrivate;
 
 #include "MIMEManager.h"
 
diff --git a/src/servers/registrar/MessageRunnerManager.cpp b/src/servers/registrar/MessageRunnerManager.cpp
index f198315c4b..f1b5aa3692 100644
--- a/src/servers/registrar/MessageRunnerManager.cpp
+++ b/src/servers/registrar/MessageRunnerManager.cpp
@@ -74,6 +74,8 @@
 */
 
 
+using namespace BPrivate;
+
 //! The minimal time interval for message runners (50 ms).
 static const bigtime_t kMininalTimeInterval = 50000LL;