diff --git a/Cubical/Algebra/CommAlgebra/FPAlgebra/Base.agda b/Cubical/Algebra/CommAlgebra/FPAlgebra/Base.agda
index 229c8cb20a..322e06a5f9 100644
--- a/Cubical/Algebra/CommAlgebra/FPAlgebra/Base.agda
+++ b/Cubical/Algebra/CommAlgebra/FPAlgebra/Base.agda
@@ -51,7 +51,7 @@ module _ {R : CommRing ℓ} where
   evPolyHomomorphic A B f P values =
     (fst f) (evPoly A P values)                         ≡⟨ refl ⟩
     (fst f) (fst (freeInducedHom A values) P)           ≡⟨ refl ⟩
-    fst (f ∘a freeInducedHom A values) P                ≡⟨ cong (λ u → fst u P) (natIndHomR f values) ⟩
+    fst (f ∘a freeInducedHom A values) P                ≡⟨ cong (λ u → fst u P) (natIndHomR {A = A} {B = B} f values) ⟩
     fst (freeInducedHom B (fst f ∘ values)) P           ≡⟨ refl ⟩
     evPoly B P (fst f ∘ values) ∎
     where open AlgebraHoms
diff --git a/Cubical/Algebra/CommAlgebra/FPAlgebra/Instances.agda b/Cubical/Algebra/CommAlgebra/FPAlgebra/Instances.agda
index 26e21cad66..24319606d8 100644
--- a/Cubical/Algebra/CommAlgebra/FPAlgebra/Instances.agda
+++ b/Cubical/Algebra/CommAlgebra/FPAlgebra/Instances.agda
@@ -78,13 +78,13 @@ module _ (R : CommRing ℓ) where
         inverse1 : fromA ∘a toA ≡ idAlgebraHom _
         inverse1 =
           fromA ∘a toA
-            ≡⟨ sym (unique _ _ _ _ _ _ (λ i → cong (fst fromA) (
+            ≡⟨ sym (unique _ _ B _ _ _ (λ i → cong (fst fromA) (
                  fst toA (generator n emptyGen i)
                    ≡⟨ inducedHomOnGenerators _ _ _ _ _ _ ⟩
                  Construction.var i
                    ∎))) ⟩
           inducedHom n emptyGen B (generator _ _) (relationsHold _ _)
-            ≡⟨ unique _ _ _ _ _ _ (λ i → refl) ⟩
+            ≡⟨ unique _ _ B _ _ _ (λ i → refl) ⟩
           idAlgebraHom _
             ∎
         inverse2 : toA ∘a fromA ≡ idAlgebraHom _