diff --git a/tests/test_Polynomial.cpp b/tests/test_Polynomial.cpp
index 7c8951c90d5cdd9432c65ff3eda778348838dc70..1d227564f97810f40a855e46df436336e5c9bf34 100644
--- a/tests/test_Polynomial.cpp
+++ b/tests/test_Polynomial.cpp
@@ -187,7 +187,7 @@ TEST_CASE("Polynomial", "[analysis]")
     Polynomial<2> R;
     lagrangePolynomial({-1, 0, 1}, 0, R);
     REQUIRE(R == P);
-    TinyVector<2, Polynomial<2>> basis;
+    TinyVector<3, Polynomial<2>> basis;
     //    lagrangeBasis<2>({-1,0,1},basis);
     basis[0] = Polynomial<2>({0, -0.5, 0.5});
     basis[1] = Polynomial<2>({1, 0, -1});