diff --git a/source/uibase.pas b/source/uibase.pas
index 9354e0c..6ebddb1 100644
--- a/source/uibase.pas
+++ b/source/uibase.pas
@@ -1548,7 +1548,7 @@ procedure ADD_SPB_NUMERIC(var p: PAnsiChar; data: Integer);
   isc_tpb_version3 = #3;
   isc_tpb_consistency = #1;
   isc_tpb_concurrency = #2;
-{$IFNDEF FB_21UP}
+{$IFNDEF FB21_UP}
   isc_tpb_shared = #3;
   isc_tpb_protected = #4;
   isc_tpb_exclusive = #5;
diff --git a/source/uiblib.pas b/source/uiblib.pas
index 0eab1e3..942d350 100644
--- a/source/uiblib.pas
+++ b/source/uiblib.pas
@@ -141,7 +141,7 @@   EUIBExceptionClass = class of EUIBError;
     { allows concurrent transactions to read and write shared data. }
     tpConcurrency,
     { Concurrent, shared access of a specified table among all transactions. }
-  {$IFNDEF FB_21UP}
+  {$IFNDEF FB21_UP}
     tpShared,
     { Concurrent, restricted access of a specified table. }
     tpProtected,
@@ -1776,7 +1776,7 @@ function SQLUnQuote(const name: string): string;
     tpc: array[TTransParam] of AnsiChar = (
       isc_tpb_consistency,
       isc_tpb_concurrency,
-    {$IFNDEF FB_21UP}
+    {$IFNDEF FB21_UP}
       isc_tpb_shared,
       isc_tpb_protected,
       isc_tpb_exclusive,