diff --git a/tests/functional/r/regression_02/regression_5408.rc b/tests/functional/r/regression_02/regression_5408.rc
index 16b75eea75..7b414202d3 100644
--- a/tests/functional/r/regression_02/regression_5408.rc
+++ b/tests/functional/r/regression_02/regression_5408.rc
@@ -1,2 +1,3 @@
 [testoptions]
 min_pyver=3.9
+except_implementations=PyPy