diff --git a/src/number/__test__/arithmetic.spec.js b/src/number/__test__/arithmetic.spec.js
index 7a473fd..da856d0 100644
--- a/src/number/__test__/arithmetic.spec.js
+++ b/src/number/__test__/arithmetic.spec.js
@@ -50,5 +50,6 @@ describe('number arithmetic', () => {
          [cplx(cbrt10),
             cplx(-cbrt10 / 2, cbrt10 * cbrtIm),
             cplx(-cbrt10 / 2, -cbrt10 * cbrtIm)])
+      math.config.returnTyping = saveTyping
    })
 })