diff --git a/df_datalink_sp/src/systembus/systembus.c b/df_datalink_sp/src/systembus/systembus.c
index 926dd62..6ca6ab2 100644
--- a/df_datalink_sp/src/systembus/systembus.c
+++ b/df_datalink_sp/src/systembus/systembus.c
@@ -38,7 +38,7 @@
 // -- Production type
 #define WD_PRD 0x01
 #define PRD_DL_K 0xDD
-#define PRD_DL_S 0xDE
+#define PRD_DL_S 0xEE
 #define PRD_ALL 0xFF
 
 // Self-Test