diff --git a/paw/stos/head/ke/knot.h b/paw/stos/head/ke/knot.h
index fd0d801..d2eb3c9 100644
--- a/paw/stos/head/ke/knot.h
+++ b/paw/stos/head/ke/knot.h
@@ -22,6 +22,7 @@
  * @KNOT_IRQL_NOT_LTE:      IRQL not less than or equal
  * @KNOT_IRQL_NOT_GTE:      IRQL not greater than or equal
  * @KNOT_BAD_CHECKSUM:      Fatal bad checksum value
+ * @KNOT_MISSING_HARDWARE:  Missing hardware
  */
 typedef enum {
     KNOT_MISC,
@@ -31,7 +32,8 @@ typedef enum {
     KNOT_EXCEPTION,
     KNOT_IRQL_NOT_LTE,
     KNOT_IRQL_NOT_GTE,
-    KNOT_BAD_CHECKSUM
+    KNOT_BAD_CHECKSUM,
+    KNOT_MISSING_HARDWARE
 } KNOT_REASON;
 
 /*
diff --git a/paw/stos/ke/knot.c b/paw/stos/ke/knot.c
index ad812ea..adc1d77 100644
--- a/paw/stos/ke/knot.c
+++ b/paw/stos/ke/knot.c
@@ -25,7 +25,8 @@ static const CHAR *ReasonTable[] = {
     [KNOT_EXCEPTION] = "fatal exception",
     [KNOT_IRQL_NOT_LTE] = "irql not less than or equal",
     [KNOT_IRQL_NOT_GTE] = "irql not greater than or equal",
-    [KNOT_BAD_CHECKSUM] = "bad checksum"
+    [KNOT_BAD_CHECKSUM] = "bad checksum",
+    [KNOT_MISSING_HARDWARE] = "missing hardware"
 };
 
 /* Globals */