diff --git a/include/avrt.h b/include/avrt.h
index 2d0ab096bf4..9d12c1b5b1b 100644
--- a/include/avrt.h
+++ b/include/avrt.h
@@ -28,7 +28,8 @@ extern "C" {
 
 typedef enum _AVRT_PRIORITY
 {
-    AVRT_PRIORITY_LOW = -1,
+    AVRT_PRIORITY_VERYLOW = -2,
+    AVRT_PRIORITY_LOW,
     AVRT_PRIORITY_NORMAL,
     AVRT_PRIORITY_HIGH,
     AVRT_PRIORITY_CRITICAL