diff --git a/tests/test_frontends.py b/tests/test_frontends.py
index e652c6e64..bdaf037f2 100644
--- a/tests/test_frontends.py
+++ b/tests/test_frontends.py
@@ -1415,7 +1415,7 @@ def test_regex_function_inline_return_type():
     assert 'dot_product_ecv' in routine.variables
 
 
-@pytest.mark.parametrize('frontend', available_frontends(xfail=(OFP, 'No support for prefix implemented')))
+@pytest.mark.parametrize('frontend', available_frontends(xfail=[(OFP, 'No support for prefix implemented')]))
 def test_regex_prefix(frontend):
     fcode = """
 module some_mod
diff --git a/tests/test_subroutine.py b/tests/test_subroutine.py
index 0dfa401e6..d126d295d 100644
--- a/tests/test_subroutine.py
+++ b/tests/test_subroutine.py
@@ -1501,7 +1501,7 @@ def test_subroutine_stmt_func(here, frontend):
     integer :: tmp
     mult(i, j) = i * j
 
-    array(i) = i
+    array(a) = a
     tmp = plus(a, 5)
     tmp = minus(tmp, 1)
     b = mult(2, tmp)