diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index e4cd3e9..d0387d8 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -457,6 +457,7 @@
 				 * other paths */
 #define DID_NEXUS_FAILURE 0x11  /* Permanent nexus failure, retry on other
 				 * paths might yield different results */
+#define DID_ALLOC_FAILURE 0x12  /* Space allocation on the device failed */
 #define DRIVER_OK       0x00	/* Driver status                           */
 
 /*