diff --git a/programs/KOSfuncs.inc b/programs/KOSfuncs.inc
index d94defb56b..d0dfdf73d6 100644
--- a/programs/KOSfuncs.inc
+++ b/programs/KOSfuncs.inc
@@ -272,9 +272,14 @@ SF_NETWORK_PROTOCOL=76
   SSF_ARP_DEL_ENTRY=50005h
   SSF_ARP_SEND_ANNOUNCE=50006h
   SSF_ARP_CONFLICTS_COUNT=50007h
+SF_FUTEX=77
+  SSF_CREATE=0
+  SSF_DESTROY=1
+  SSF_WAIT=2
+  SSF_WAKE=3
 
 ; File system errors:
-FSERR_DISK_BASE=1
+FSERR_SUCCESS=0
 FSERR_UNSUPPORTED=2
 FSERR_UNKNOWN=3
 FSERR_FILE_NOT_FOUND=5