diff --git a/src/Tahoe/SDMF/Internal/Capability.hs b/src/Tahoe/SDMF/Internal/Capability.hs
index bc2f24312917598ba54b4a99e11ee04d4286319c..ba5acbf0698e6e9247aa60d0c52d992fcb6104c2 100644
--- a/src/Tahoe/SDMF/Internal/Capability.hs
+++ b/src/Tahoe/SDMF/Internal/Capability.hs
@@ -23,7 +23,6 @@ import Tahoe.SDMF.Internal.Keys (
     deriveReadKey,
     deriveStorageIndex,
     readKeyBytes,
-    shorten,
     showBase32,
  )
 import Text.Megaparsec (