diff --git a/dix/dispatch.c b/dix/dispatch.c
index b9daec5ca..77d6217a7 100644
--- a/dix/dispatch.c
+++ b/dix/dispatch.c
@@ -110,6 +110,7 @@ Equipment Corporation.
 #include "dix/registry_priv.h"
 #include "dix/screenint_priv.h"
 #include "os/auth.h"
+#include "os/osdep.h"
 
 #include "windowstr.h"
 #include "dixfontstr.h"
diff --git a/include/os.h b/include/os.h
index 92320d949..f38e6c4d8 100644
--- a/include/os.h
+++ b/include/os.h
@@ -147,8 +147,6 @@ static inline void RemoveNotifyFd(int fd)
     (void) SetNotifyFd(fd, NULL, X_NOTIFY_NONE, NULL);
 }
 
-extern _X_EXPORT int OnlyListenToOneClient(ClientPtr /*client */ );
-
 extern _X_EXPORT void ListenToAllClients(void);
 
 extern _X_EXPORT void IgnoreClient(ClientPtr /*client */ );
diff --git a/os/osdep.h b/os/osdep.h
index 318d2b61d..d93a5a926 100644
--- a/os/osdep.h
+++ b/os/osdep.h
@@ -191,4 +191,6 @@ void OsAbort(void) _X_NORETURN;
 void MakeClientGrabPervious(ClientPtr client);
 void MakeClientGrabImpervious(ClientPtr client);
 
+int OnlyListenToOneClient(ClientPtr client);
+
 #endif                          /* _OSDEP_H_ */