diff --git a/src/libsysprof-profile/sysprof-perf-event-stream-private.h b/src/libsysprof-profile/sysprof-perf-event-stream-private.h
index a9bc1987..aab37632 100644
--- a/src/libsysprof-profile/sysprof-perf-event-stream-private.h
+++ b/src/libsysprof-profile/sysprof-perf-event-stream-private.h
@@ -125,13 +125,17 @@ typedef void (*SysprofPerfEventCallback) (const SysprofPerfEvent *event,
 
 G_DECLARE_FINAL_TYPE (SysprofPerfEventStream, sysprof_perf_event_stream, SYSPROF, PERF_EVENT_STREAM, GObject)
 
-DexFuture *sysprof_perf_event_stream_new (GDBusConnection          *connection,
-                                          struct perf_event_attr   *attr,
-                                          int                       cpu,
-                                          int                       group_fd,
-                                          gulong                    flags,
-                                          SysprofPerfEventCallback  callback,
-                                          gpointer                  callback_data,
-                                          GDestroyNotify            callback_data_destroy);
+DexFuture *sysprof_perf_event_stream_new     (GDBusConnection           *connection,
+                                              struct perf_event_attr    *attr,
+                                              int                        cpu,
+                                              int                        group_fd,
+                                              gulong                     flags,
+                                              SysprofPerfEventCallback   callback,
+                                              gpointer                   callback_data,
+                                              GDestroyNotify             callback_data_destroy);
+gboolean   sysprof_perf_event_stream_enable  (SysprofPerfEventStream    *self,
+                                              GError                   **error);
+gboolean   sysprof_perf_event_stream_disable (SysprofPerfEventStream    *self,
+                                              GError                   **error);
 
 G_END_DECLS