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-rw-r--r--Precond.agda2
1 files changed, 1 insertions, 1 deletions
diff --git a/Precond.agda b/Precond.agda
index 85c955c..8d2eab2 100644
--- a/Precond.agda
+++ b/Precond.agda
@@ -100,7 +100,7 @@ lemma-∉-lookupM-assoc i (i' ∷ is') (x' ∷ xs') h ph i∉is with assoc is' x
lemma-∉-lookupM-assoc i (i' ∷ is') (x' ∷ xs') h () i∉is | nothing | [ ph' ]
lemma-∉-lookupM-assoc i (i' ∷ is') (x' ∷ xs') h ph i∉is | just h' | [ ph' ] = begin
lookupM i h
- ≡⟨ sym (lemma-lookupM-checkInsert-other i i' (i∉is ∘ here) x' h' h ph) ⟩
+ ≡⟨ lemma-lookupM-checkInsert-other i i' (i∉is ∘ here) x' h' h ph ⟩
lookupM i h'
≡⟨ lemma-∉-lookupM-assoc i is' xs' h' ph' (i∉is ∘ there) ⟩
nothing ∎