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-rw-r--r--src/Language/GraphQL/AST/Encoder.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Language/GraphQL/AST/Encoder.hs b/src/Language/GraphQL/AST/Encoder.hs
index 9b293bf..f5bfcc3 100644
--- a/src/Language/GraphQL/AST/Encoder.hs
+++ b/src/Language/GraphQL/AST/Encoder.hs
@@ -205,7 +205,7 @@ value _ (Full.Variable x) = variable x
value _ (Full.Int x) = Builder.toLazyText $ decimal x
value _ (Full.Float x) = Builder.toLazyText $ realFloat x
value _ (Full.Boolean x) = booleanValue x
-value _ Full.Null = mempty
+value _ Full.Null = "null"
value formatter (Full.String string) = stringValue formatter string
value _ (Full.Enum x) = Lazy.Text.fromStrict x
value formatter (Full.List x) = listValue formatter x