diff --git a/base/linalg/adjtrans.jl b/base/linalg/adjtrans.jl
index 6d7b56aa89fe8..560698dfe021c 100644
--- a/base/linalg/adjtrans.jl
+++ b/base/linalg/adjtrans.jl
@@ -23,7 +23,7 @@ struct Transpose{T,S} <: AbstractMatrix{T}
     end
 end
 
-@pure function checkeltype(::Type{Transform}, ::Type{ResultEltype}, ::Type{ParentEltype}) where {Transform, ResultEltype, ParentEltype}
+function checkeltype(::Type{Transform}, ::Type{ResultEltype}, ::Type{ParentEltype}) where {Transform, ResultEltype, ParentEltype}
     if ResultEltype !== transformtype(Transform, ParentEltype)
         error(string("Element type mismatch. Tried to create an `$Transform{$ResultEltype}` ",
             "from an object with eltype `$ParentEltype`, but the element type of the ",