diff --git a/stdlib/LinearAlgebra/src/dense.jl b/stdlib/LinearAlgebra/src/dense.jl
index e8bf2b0d12ee11..cc90e43591fee8 100644
--- a/stdlib/LinearAlgebra/src/dense.jl
+++ b/stdlib/LinearAlgebra/src/dense.jl
@@ -1005,7 +1005,7 @@ cbrt(A::AdjointAbsMat) = adjoint(cbrt(parent(A)))
 cbrt(A::TransposeAbsMat) = transpose(cbrt(parent(A)))
 
 function applydiagonal(f, A)
-    dinv = f(Diagonal(diag(A)))
+    dinv = f(Diagonal(A))
     copyto!(similar(A, eltype(dinv)), dinv)
 end