diff --git a/doc/man/man8/slapindex.8 b/doc/man/man8/slapindex.8
index e6dd14516e..972a07eff6 100644
--- a/doc/man/man8/slapindex.8
+++ b/doc/man/man8/slapindex.8
@@ -138,7 +138,7 @@ interruptions occur.
 .TP
 .B \-t
 enable truncate mode. Truncates (empties) an index database before indexing
-any entries. May only be used with Quick mode.
+any entries. May only be used with back-mdb.
 .TP
 .B \-v
 enable verbose mode.