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-rw-r--r--compiler/utils/FastStringEnv.hs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/utils/FastStringEnv.hs b/compiler/utils/FastStringEnv.hs
index 14b0859211..1b4af6cee7 100644
--- a/compiler/utils/FastStringEnv.hs
+++ b/compiler/utils/FastStringEnv.hs
@@ -27,6 +27,8 @@ module FastStringEnv (
mkDFsEnv, emptyDFsEnv, dFsEnvElts, lookupDFsEnv
) where
+import GhcPrelude
+
import UniqFM
import UniqDFM
import Maybes