diff --git a/questionable/options.nim b/questionable/options.nim
index f252b98..34b12f5 100644
--- a/questionable/options.nim
+++ b/questionable/options.nim
@@ -34,7 +34,7 @@ template `=?`*[T](name: untyped{nkIdent}, option: ?T): bool =
 template liftPrefix(_: type Option, operator: untyped) =
 
   template `operator`*(a: ?typed): ?typed =
-    type T = type(`operator`(a.unsafeGet))
+    type T {.used.} = type(`operator`(a.unsafeGet))
     if x =? a:
       `operator`(x).some
     else:
diff --git a/questionable/results.nim b/questionable/results.nim
index 1716ee4..d23352e 100644
--- a/questionable/results.nim
+++ b/questionable/results.nim
@@ -37,7 +37,7 @@ template `=?`*[T](name: untyped{nkIdent}, value: ?!T): bool =
 template liftPrefix(_: type Result, operator: untyped) =
 
   template `operator`*(a: ?!typed): ?!typed =
-    type T = type(`operator`(a.unsafeGet))
+    type T {.used.} = type(`operator`(a.unsafeGet))
     if x =? a:
       `operator`(x).success
     else: