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-rw-r--r--compiler/GHC/Unit/Module/Deps.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Unit/Module/Deps.hs b/compiler/GHC/Unit/Module/Deps.hs
index 75063e901f..894fa7a4aa 100644
--- a/compiler/GHC/Unit/Module/Deps.hs
+++ b/compiler/GHC/Unit/Module/Deps.hs
@@ -283,7 +283,7 @@ data Usage
usg_file_hash :: Fingerprint,
-- ^ 'Fingerprint' of the file contents.
- usg_file_label :: Maybe String
+ usg_file_label :: Maybe FastString
-- ^ An optional string which is used in recompilation messages if
-- file in question has changed.