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diff --git a/src/CompleteEdwardsCurve/ExtendedCoordinatesIssue.v b/src/CompleteEdwardsCurve/ExtendedCoordinatesIssue.v
deleted file mode 100644
index 8d24f2cd2..000000000
--- a/src/CompleteEdwardsCurve/ExtendedCoordinatesIssue.v
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-Require Import Crypto.ModularArithmetic.PrimeFieldTheorems.
-Require Import Crypto.Spec.CompleteEdwardsCurve.
-
-Section ExtendedCoordinates.
-  Local Open Scope F_scope.
-
-  Context {prm:TwistedEdwardsParams}.
-  Context {p:BinInt.Z} {p_eq_q:p = q}.
-  Lemma prime_p : Znumtheory.prime p.
-    rewrite p_eq_q; exact prime_q.
-  Qed.
-
-  Add Field Ffield_Z : (@Ffield_theory p prime_p)
-    (morphism (@Fring_morph p),
-     preprocess [Fpreprocess],
-     postprocess [Fpostprocess],
-     constants [Fconstant],
-     div (@Fmorph_div_theory p),
-     power_tac (@Fpower_theory p) [Fexp_tac]). 
-
-  Lemma biggerFraction : forall XP YP ZP XQ YQ ZQ d : F q, 
-   ZQ <> 0 ->
-   ZP <> 0 ->
-   ZP * ZQ * ZP * ZQ + d * XP * XQ * YP * YQ <> 0 ->
-   ZP * ZToField 2 * ZQ * (ZP * ZQ) + XP * YP * ZToField 2 * d * (XQ * YQ) <> 0 ->
-   ZP * ZToField 2 * ZQ * (ZP * ZQ) - XP * YP * ZToField 2 * d * (XQ * YQ) <> 0 ->
-
-   ((YP + XP) * (YQ + XQ) - (YP - XP) * (YQ - XQ)) *
-   (ZP * ZToField 2 * ZQ - XP * YP / ZP * ZToField 2 * d * (XQ * YQ / ZQ)) /
-   ((ZP * ZToField 2 * ZQ - XP * YP / ZP * ZToField 2 * d * (XQ * YQ / ZQ)) *
-    (ZP * ZToField 2 * ZQ + XP * YP / ZP * ZToField 2 * d * (XQ * YQ / ZQ))) =
-   (XP / ZP * (YQ / ZQ) + YP / ZP * (XQ / ZQ)) / (1 + d * (XP / ZP) * (XQ / ZQ) * (YP / ZP) * (YQ / ZQ)).
-  Proof.
-    rewrite <-p_eq_q.
-    intros.
-    abstract (field; assumption).
-  Qed.
-End ExtendedCoordinates.
-\ No newline at end of file