diff --git a/pint/testsuite/benchmarks/test_01_registry_creation.py b/pint/testsuite/benchmarks/test_01_registry_creation.py
index 0f4559327..8b459f2bd 100644
--- a/pint/testsuite/benchmarks/test_01_registry_creation.py
+++ b/pint/testsuite/benchmarks/test_01_registry_creation.py
@@ -6,7 +6,7 @@
 @pytest.mark.parametrize("args", [[(None,), tuple(), ("tiny",), ("", None)]])
 def test_create_registry(benchmark, tiny_definition_file, args):
     if args[0] == "tiny":
-        args = (tiny_definition_file, args[1])
+        args = (tiny_definition_file, args[1:])
 
     @benchmark
     def _():
diff --git a/pint/testsuite/benchmarks/test_10_registry.py b/pint/testsuite/benchmarks/test_10_registry.py
index 2b9350964..52cf110e9 100644
--- a/pint/testsuite/benchmarks/test_10_registry.py
+++ b/pint/testsuite/benchmarks/test_10_registry.py
@@ -94,7 +94,7 @@ def test_convert_from_uc(benchmark, my_setup, key):
     benchmark(ureg._convert, 1.0, data[src], data[dst])
 
 
-def test_parse_math_expression(benchmark):
+def test_parse_math_expression(benchmark, my_setup):
     ureg, _ = my_setup
     benchmark(ureg.parse_expression, "3 + 5 * 2 + value", value=10)
 
diff --git a/pint/testsuite/benchmarks/test_30_numpy.py b/pint/testsuite/benchmarks/test_30_numpy.py
index 3a73b9c10..94e9f1519 100644
--- a/pint/testsuite/benchmarks/test_30_numpy.py
+++ b/pint/testsuite/benchmarks/test_30_numpy.py
@@ -25,7 +25,10 @@
 OP2_CMP = (operator.eq, operator.lt)
 OP2_MATH = (operator.add, operator.sub, operator.mul, operator.truediv)
 
-if np is not None:
+if np is None:
+    NUMPY_OP1_MATH = NUMPY_OP2_CMP = NUMPY_OP2_MATH = ()
+else:
+    NUMPY_OP1_MATH = (np.sqrt, np.square)
     NUMPY_OP2_CMP = (np.equal, np.less)
     NUMPY_OP2_MATH = (np.add, np.subtract, np.multiply, np.true_divide)
 
@@ -86,7 +89,7 @@ def test_build_by_mul(benchmark, setup, key):
 
 @requires_numpy
 @pytest.mark.parametrize("key", ALL_ARRAYS_Q)
-@pytest.mark.parametrize("op", OP1 + (np.sqrt, np.square))
+@pytest.mark.parametrize("op", OP1 + NUMPY_OP1_MATH)
 def test_op1(benchmark, setup, key, op):
     _, data = setup
     benchmark(op, data[key])