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-rw-r--r--Types/Key.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/Types/Key.hs b/Types/Key.hs
index e8b775fd7..2ddb3f50e 100644
--- a/Types/Key.hs
+++ b/Types/Key.hs
@@ -81,7 +81,7 @@ file2key s = if key == Just stubKey then Nothing else key
instance Arbitrary Key where
arbitrary = Key
- <$> (listOf1 $ elements $ ['A'..'Z'] ++ ['a'..'z'] ++ ['0'..'9'] ++ "\r\n \t")
+ <$> (listOf1 $ elements $ ['A'..'Z'] ++ ['a'..'z'] ++ ['0'..'9'] ++ "-_\r\n \t")
<*> (listOf1 $ elements ['A'..'Z']) -- BACKEND
<*> ((abs <$>) <$> arbitrary) -- size cannot be negative
<*> arbitrary