diff --git a/service/ptos/head/ke/bugcheck.h b/service/ptos/head/ke/bugcheck.h
index 7f37057..3b4fe59 100644
--- a/service/ptos/head/ke/bugcheck.h
+++ b/service/ptos/head/ke/bugcheck.h
@@ -22,6 +22,7 @@
  * @BUGCHECK_IRQL_NOT_GTE:  IRQL not greater than or equal
  * @BUGCHECK_IRQL_NOT_LTE:  IRQL not less than or equal
  * @BUGCHECK_BAD_FREE:      Bad free operation
+ * @BUGCHECK_BAD_CHECKSUM:  Bad checksum
  */
 typedef enum {
     BUGCHECK_MISC,
@@ -31,7 +32,8 @@ typedef enum {
     BUGCHECK_EXCEPTION,
     BUGCHECK_IRQL_NOT_GTE,
     BUGCHECK_IRQL_NOT_LTE,
-    BUGCHECK_BAD_FREE
+    BUGCHECK_BAD_FREE,
+    BUGCHECK_BAD_CHECKSUM
 } BUGCHECK_REASON;
 
 /*
diff --git a/service/ptos/ke/bugcheck.c b/service/ptos/ke/bugcheck.c
index 367c37a..3ea1e36 100644
--- a/service/ptos/ke/bugcheck.c
+++ b/service/ptos/ke/bugcheck.c
@@ -39,7 +39,8 @@ static CHAR *ReasonTable[] = {
     [BUGCHECK_EXCEPTION] = "fatal exception",
     [BUGCHECK_IRQL_NOT_GTE] = "irql not greater than or equal",
     [BUGCHECK_IRQL_NOT_LTE] = "irql not less than or equal",
-    [BUGCHECK_BAD_FREE] = "bad free"
+    [BUGCHECK_BAD_FREE] = "bad free",
+    [BUGCHECK_BAD_CHECKSUM] = "bad checksum"
 };
 
 VOID