diff --git a/src/aff_expr.jl b/src/aff_expr.jl
index 4c76f6ddc2e..97163bb769c 100644
--- a/src/aff_expr.jl
+++ b/src/aff_expr.jl
@@ -270,10 +270,6 @@ end
 
 GenericAffExpr{C,V}() where {C,V} = zero(GenericAffExpr{C,V})
 
-function _affine_coefficient(f::GenericAffExpr{C,V}, variable::V) where {C,V}
-    return get(f.terms, variable, zero(C))
-end
-
 """
     map_coefficients_inplace!(f::Function, a::GenericAffExpr)
 
diff --git a/src/constraints.jl b/src/constraints.jl
index ad61e0b9a89..c3489f5dce2 100644
--- a/src/constraints.jl
+++ b/src/constraints.jl
@@ -852,15 +852,10 @@ julia> normalized_coefficient(con, x)
 ```
 """
 function normalized_coefficient(
-    con_ref::ConstraintRef{<:AbstractModel,MOI.ConstraintIndex{F,S}},
+    con_ref::ConstraintRef{<:AbstractModel,<:MOI.ConstraintIndex{F}},
     variable,
-) where {
-    S,
-    T,
-    F<:Union{MOI.ScalarAffineFunction{T},MOI.ScalarQuadraticFunction{T}},
-}
-    con = constraint_object(con_ref)
-    return _affine_coefficient(con.func, variable)
+) where {F<:Union{MOI.ScalarAffineFunction,MOI.ScalarQuadraticFunction}}
+    return coefficient(constraint_object(con_ref).func, variable)
 end
 
 """
diff --git a/src/quad_expr.jl b/src/quad_expr.jl
index 9d6fbf0ac49..3f638b1a8a9 100644
--- a/src/quad_expr.jl
+++ b/src/quad_expr.jl
@@ -252,10 +252,6 @@ function _map_quad(
     return GenericQuadExpr(aff, terms)
 end
 
-function _affine_coefficient(f::GenericQuadExpr{C,V}, variable::V) where {C,V}
-    return _affine_coefficient(f.aff, variable)
-end
-
 """
     constant(aff::GenericQuadExpr{C, V})::C