diff --git a/oneface/arg.py b/oneface/arg.py
index 4766ba5..c8bc902 100644
--- a/oneface/arg.py
+++ b/oneface/arg.py
@@ -41,7 +41,7 @@ def check(self, val):
             if not self.type_checker(val, self.type):
                 raise TypeError(
                     f"Input value {val} is not in valid type({self.type})")
-        if (self.range is not None) and (self.range_checker is not None):
+        if (self.range_checker is not None):
             if (not self.range_checker(val, self.range)):
                 raise ValueError(f"Input value {val} is not in a valid range.")
 
@@ -56,11 +56,15 @@ def register_type_check(cls, type, checker=None):
 
 
 # register basic types
+def _check_number_in_range(v, range):
+    return (range is None) or (range[0] <= v <= range[1])
+
+
 Arg.register_type_check(Empty, lambda v, range: True)
 Arg.register_type_check(str)
-Arg.register_range_check(int, lambda v, range: range[0] <= v <= range[1])
+Arg.register_range_check(int, _check_number_in_range)
 Arg.register_type_check(int)
-Arg.register_range_check(float, lambda v, range: range[0] <= v <= range[1])
+Arg.register_range_check(float, _check_number_in_range)
 Arg.register_type_check(float)
 Arg.register_type_check(bool)
 
diff --git a/tests/test_types.py b/tests/test_types.py
index 91cdec9..f5db24c 100644
--- a/tests/test_types.py
+++ b/tests/test_types.py
@@ -5,7 +5,7 @@
 
 
 def test_selection():
-    @one
+    @one(print_args=False)
     def func1(a: Arg(Selection, ["a", 2, 3])):
         print(a)
         return a
@@ -18,7 +18,7 @@ def func1(a: Arg(Selection, ["a", 2, 3])):
 
 
 def test_subset():
-    @one
+    @one(print_args=False)
     def func1(s: Arg(SubSet, [1,2,3])):
         print(s)
         return s
@@ -31,7 +31,7 @@ def func1(s: Arg(SubSet, [1,2,3])):
 
 
 def test_inputpath():
-    @one
+    @one(print_args=False)
     def func1(s: Arg(InputPath)):
         print(s)
         return s
@@ -46,7 +46,7 @@ def func1(s: Arg(InputPath)):
 
 
 def test_outputpath():
-    @one
+    @one(print_args=False)
     def func1(s: Arg(OutputPath)):
         print(s)
         return s