diff --git a/asminc/ser-kernel.inc b/asminc/ser-kernel.inc
index 4dd6ccd7d..c099b8173 100644
--- a/asminc/ser-kernel.inc
+++ b/asminc/ser-kernel.inc
@@ -55,7 +55,7 @@
 ;------------------------------------------------------------------------------
 ; The SER API version, stored SER_HDR::VERSION
 
-SER_API_VERSION         = $01
+SER_API_VERSION         = $00
 
 ;------------------------------------------------------------------------------
 ; ser_params