diff --git a/src/pulsecore/core.h b/src/pulsecore/core.h
index 8570d4742..9fefd1bab 100644
--- a/src/pulsecore/core.h
+++ b/src/pulsecore/core.h
@@ -126,6 +126,8 @@ typedef enum pa_core_hook {
     PA_CORE_HOOK_CARD_PROFILE_AVAILABLE_CHANGED,
     PA_CORE_HOOK_PORT_AVAILABLE_CHANGED,
     PA_CORE_HOOK_PORT_LATENCY_OFFSET_CHANGED,
+    PA_CORE_HOOK_DEFAULT_SINK_CHANGED,
+    PA_CORE_HOOK_DEFAULT_SOURCE_CHANGED,
     PA_CORE_HOOK_MAX
 } pa_core_hook_t;