diff --git a/test/test_eigenvalues/test_verify_eigs.jl b/test/test_eigenvalues/test_verify_eigs.jl
index ba3be1df..91c6b57f 100644
--- a/test/test_eigenvalues/test_verify_eigs.jl
+++ b/test/test_eigenvalues/test_verify_eigs.jl
@@ -11,7 +11,7 @@ end
     ev = sort(randn(n))
     D = Diagonal(ev)
     Q, _ = qr(rand(n, n))
-    A = Symmetric(IA.Interval.(Q) * D * IA.Interval.(Q)')
+    A = Symmetric(IA.Interval.(Matrix(Q)) * D * IA.Interval.(Matrix(Q')))
 
     evals, evecs, cert = verify_eigen(A)
     @test all(cert)