diff --git a/cardano-cli/src/Cardano/CLI/EraBased/Run/Query.hs b/cardano-cli/src/Cardano/CLI/EraBased/Run/Query.hs
index 17d3d0926..8ff93110a 100644
--- a/cardano-cli/src/Cardano/CLI/EraBased/Run/Query.hs
+++ b/cardano-cli/src/Cardano/CLI/EraBased/Run/Query.hs
@@ -752,8 +752,8 @@ runQueryRefScriptSizeCmd
         & onLeft left
 
 newtype RefInputScriptSize = RefInputScriptSize {refInputScriptSize :: Int}
-  deriving (Generic)
-  deriving anyclass (ToJSON)
+  deriving Generic
+  deriving anyclass ToJSON
 
 instance Pretty RefInputScriptSize where
   pretty (RefInputScriptSize s) = "Reference inputs scripts size is" <+> pretty s <+> "bytes."