diff --git a/service/ptos/head/ke/bugcheck.h b/service/ptos/head/ke/bugcheck.h
index 8f781eb..2284378 100644
--- a/service/ptos/head/ke/bugcheck.h
+++ b/service/ptos/head/ke/bugcheck.h
@@ -24,6 +24,7 @@
  * @BUGCHECK_BAD_FREE:          Bad free operation
  * @BUGCHECK_BAD_CHECKSUM:      Bad checksum
  * @BUGCHECK_MISSING_HARDWARE:  Missing hardware
+ * @BUGCHECK_SYSTEMPROC_KILLED: Critical system process killed
  */
 typedef enum {
     BUGCHECK_MISC,
@@ -35,7 +36,8 @@ typedef enum {
     BUGCHECK_IRQL_NOT_LTE,
     BUGCHECK_BAD_FREE,
     BUGCHECK_BAD_CHECKSUM,
-    BUGCHECK_MISSING_HARDWARE
+    BUGCHECK_MISSING_HARDWARE,
+    BUGCHECK_SYSTEMPROC_KILLED
 } BUGCHECK_REASON;
 
 /*
diff --git a/service/ptos/ke/bugcheck.c b/service/ptos/ke/bugcheck.c
index f8d4b4d..9f0cc83 100644
--- a/service/ptos/ke/bugcheck.c
+++ b/service/ptos/ke/bugcheck.c
@@ -41,7 +41,8 @@ static CHAR *ReasonTable[] = {
     [BUGCHECK_IRQL_NOT_LTE] = "irql not less than or equal",
     [BUGCHECK_BAD_FREE] = "bad free",
     [BUGCHECK_BAD_CHECKSUM] = "bad checksum",
-    [BUGCHECK_MISSING_HARDWARE] = "missing hardware"
+    [BUGCHECK_MISSING_HARDWARE] = "missing hardware",
+    [BUGCHECK_SYSTEMPROC_KILLED] = "critical system process killed"
 };
 
 VOID