diff --git a/th-data-compat.cabal b/th-data-compat.cabal
--- a/th-data-compat.cabal
+++ b/th-data-compat.cabal
@@ -1,6 +1,6 @@
 
 name:                th-data-compat
-version:             0.0.2.4
+version:             0.0.2.5
 synopsis:            Compatibility for data definition template of TH
 description:         This package contains wrapped name definitions of
                      data definition template
@@ -21,11 +21,11 @@
 
 flag template-haskell-210
   description: If true, use template-haskell 2.10 or older, otherwise use template-haskell 2.11 or newer.
-  default:     True
+  default:     False
 
 flag template-haskell-212
   description: If true, use template-haskell 2.12 or newer, otherwise use template-haskell 2.11 or older.
-  default:     False
+  default:     True
 
 library
   exposed-modules:      Language.Haskell.TH.Compat.Data