diff --git a/module/ldbc-statement/src/main/scala/ldbc/statement/Column.scala b/module/ldbc-statement/src/main/scala/ldbc/statement/Column.scala
index 5c9f5809b..c04c26bb1 100644
--- a/module/ldbc-statement/src/main/scala/ldbc/statement/Column.scala
+++ b/module/ldbc-statement/src/main/scala/ldbc/statement/Column.scala
@@ -671,7 +671,7 @@ trait Column[A]:
 
 object Column extends TwiddleSyntax[Column]:
 
-  type Extract[A] <: Tuple = T match
+  type Extract[A] <: Tuple = A match
     case Column[A]               => t *: EmptyTuple
     case Column[A] *: EmptyTuple => t *: EmptyTuple
     case Column[A] *: ts         => t *: Extract[ts]