diff --git a/warg/__init__.py b/warg/__init__.py
index dc678c6..9f5b9e0 100644
--- a/warg/__init__.py
+++ b/warg/__init__.py
@@ -8,7 +8,7 @@
 __project__ = "Warg"
 
 __author__ = "Christian Heider Nielsen"
-__version__ = "1.1.3"
+__version__ = "1.1.4"
 __doc__ = r"""
 Created on 27/04/2019
 
diff --git a/warg/ast_ops/first_arg_identifier.py b/warg/ast_ops/first_arg_identifier.py
index 38b42e5..313ace6 100644
--- a/warg/ast_ops/first_arg_identifier.py
+++ b/warg/ast_ops/first_arg_identifier.py
@@ -111,7 +111,10 @@ def visit_Call(self, node: ast.AST) -> None:
 
 
 def get_first_arg_name(
-    func_name: str, *, verbose=False, max_num_intermediate_unnamed_elements=-1  # recurse = -1
+    func_name: str,
+    *,
+    verbose=False,
+    max_num_intermediate_unnamed_elements=-1,  # recurse = -1
 ) -> Optional[str]:
     """description"""
     import inspect
diff --git a/warg/config_shell.py b/warg/config_shell.py
index 2b29142..f00ccf1 100644
--- a/warg/config_shell.py
+++ b/warg/config_shell.py
@@ -116,7 +116,12 @@ def add_property_options(self, ps: PropertySettings) -> None:
                 self.add_option(p, getter=getter, setter=setter, deleter=deleter)
 
     def add_option(
-        self, key: str, *, getter: callable, setter: callable, deleter: Optional[callable] = None
+        self,
+        key: str,
+        *,
+        getter: callable,
+        setter: callable,
+        deleter: Optional[callable] = None,
     ) -> None:
         """
 
diff --git a/warg/decorators/kw_passing.py b/warg/decorators/kw_passing.py
index 2cf182f..aa0a0b8 100644
--- a/warg/decorators/kw_passing.py
+++ b/warg/decorators/kw_passing.py
@@ -229,7 +229,11 @@ def wrapper(*args, **kwargs: MutableMapping) -> Any:
 
 
 def pack_args(
-    f: callable, *, pack_name: str = "arg_pack", allow_passing: bool = True, verbose: bool = False
+    f: callable,
+    *,
+    pack_name: str = "arg_pack",
+    allow_passing: bool = True,
+    verbose: bool = False,
 ) -> callable:
     """
 
@@ -269,7 +273,11 @@ def wrapper(*args, **kwargs: MutableMapping) -> Any:
 
 
 def pack_kws(
-    f: callable, *, pack_name: str = "kw_pack", allow_passing: bool = True, verbose: bool = False
+    f: callable,
+    *,
+    pack_name: str = "kw_pack",
+    allow_passing: bool = True,
+    verbose: bool = False,
 ) -> callable:
     """
 
@@ -309,7 +317,11 @@ def wrapper(*args, **kwargs: MutableMapping) -> Any:
 
 
 def pack_args_and_kws(
-    f: callable, *, pack_name: str = "arg_kw_pack", allow_passing: bool = True, verbose: bool = False
+    f: callable,
+    *,
+    pack_name: str = "arg_kw_pack",
+    allow_passing: bool = True,
+    verbose: bool = False,
 ) -> callable:
     """
 
diff --git a/warg/functions.py b/warg/functions.py
index f30f8f6..5efcd71 100644
--- a/warg/functions.py
+++ b/warg/functions.py
@@ -29,7 +29,17 @@
 from collections import defaultdict
 from copy import deepcopy
 from functools import reduce
-from typing import Any, Callable, Dict, Iterable, Iterator, Mapping, Sequence, Tuple, List
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    Iterable,
+    Iterator,
+    Mapping,
+    Sequence,
+    Tuple,
+    List,
+)
 
 from warg import Number, drop_unused_kws
 
diff --git a/warg/generators/filtering.py b/warg/generators/filtering.py
index 5aadfa3..93dd3b0 100644
--- a/warg/generators/filtering.py
+++ b/warg/generators/filtering.py
@@ -23,7 +23,11 @@ class FilterModeEnum(Enum):
 
     # exclude_postfix, exclude_prefix, exclude_fully = assigned_names()
     # TODO: Include variants
-    exclude_postfix, exclude_prefix, exclude_fully = "exclude_postfix", "exclude_prefix", "exclude_fully"
+    exclude_postfix, exclude_prefix, exclude_fully = (
+        "exclude_postfix",
+        "exclude_prefix",
+        "exclude_fully",
+    )
 
 
 def symbol_filter(
diff --git a/warg/math_utilities/ordinals.py b/warg/math_utilities/ordinals.py
index a5a3243..6330a02 100644
--- a/warg/math_utilities/ordinals.py
+++ b/warg/math_utilities/ordinals.py
@@ -109,5 +109,14 @@ def prev_odd(v: Number) -> Number:
 
     for a in numpy.arange(-1.0, 10.0, 0.5):
         cprint(a)
-        for f in (ceil_odd, ceil_even, floor_even, floor_odd, next_even, next_odd, prev_even, prev_odd):
+        for f in (
+            ceil_odd,
+            ceil_even,
+            floor_even,
+            floor_odd,
+            next_even,
+            next_odd,
+            prev_even,
+            prev_odd,
+        ):
             print(f.__name__, f(a))
diff --git a/warg/os_utilities/os_platform.py b/warg/os_utilities/os_platform.py
index 7267dff..183d1e3 100644
--- a/warg/os_utilities/os_platform.py
+++ b/warg/os_utilities/os_platform.py
@@ -67,5 +67,6 @@ def has_x_server() -> bool:
     :rtype:
     """
     if is_nix():
-        return os.environ["DISPLAY"] != ""
+        return "DISPLAY" in os.environ and os.environ["DISPLAY"] != ""
+
     return True