diff --git a/bus/bus.c b/bus/bus.c
index f51ee991..84e6a1fe 100644
--- a/bus/bus.c
+++ b/bus/bus.c
@@ -1324,9 +1324,6 @@ bus_context_get_initial_fd_limit (BusContext *context)
   return context->initial_fd_limit;
 }
 
-void
-bus_context_log (BusContext *context, DBusSystemLogSeverity severity, const char *msg, ...) _DBUS_GNUC_PRINTF (3, 4);
-
 void
 bus_context_log (BusContext *context, DBusSystemLogSeverity severity, const char *msg, ...)
 {
diff --git a/bus/bus.h b/bus/bus.h
index dac6ea5e..d05c80f0 100644
--- a/bus/bus.h
+++ b/bus/bus.h
@@ -120,7 +120,7 @@ DBusRLimit *      bus_context_get_initial_fd_limit               (BusContext
 void              bus_context_log                                (BusContext       *context,
                                                                   DBusSystemLogSeverity severity,
                                                                   const char       *msg,
-                                                                  ...);
+                                                                  ...) _DBUS_GNUC_PRINTF (3, 4);
 dbus_bool_t       bus_context_check_security_policy              (BusContext       *context,
                                                                   BusTransaction   *transaction,
                                                                   DBusConnection   *sender,