diff --git a/extra/gdbm/ffi/ffi.factor b/extra/gdbm/ffi/ffi.factor
index 382315b4fe..a6abc86e54 100644
--- a/extra/gdbm/ffi/ffi.factor
+++ b/extra/gdbm/ffi/ffi.factor
@@ -18,7 +18,6 @@ CONSTANT: GDBM_READER  0
 CONSTANT: GDBM_WRITER  1
 CONSTANT: GDBM_WRCREAT 2
 CONSTANT: GDBM_NEWDB   3
-CONSTANT: GDBM_FAST   HEX: 10
 CONSTANT: GDBM_SYNC   HEX: 20
 CONSTANT: GDBM_NOLOCK HEX: 40
 
@@ -26,7 +25,6 @@ CONSTANT: GDBM_INSERT  0
 CONSTANT: GDBM_REPLACE 1
 
 CONSTANT: GDBM_CACHESIZE    1
-CONSTANT: GDBM_FASTMODE     2
 CONSTANT: GDBM_SYNCMODE     3
 CONSTANT: GDBM_CENTFREE     4
 CONSTANT: GDBM_COALESCEBLKS 5