diff --git a/alfred-workflow-1.37.zip b/alfred-workflow-1.37.1.zip
similarity index 81%
rename from alfred-workflow-1.37.zip
rename to alfred-workflow-1.37.1.zip
index b18da405..eef43a54 100644
Binary files a/alfred-workflow-1.37.zip and b/alfred-workflow-1.37.1.zip differ
diff --git a/tests/conftest.py b/tests/conftest.py
index 857f3c80..be978224 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -102,6 +102,10 @@ def env(**kwargs):
             if k in os.environ:
                 del os.environ[k]
         else:
+            if isinstance(v, unicode):
+                v = v.encode('utf-8')
+            else:
+                v = str(v)
             os.environ[k] = v
 
     yield
diff --git a/tests/test_workflow.py b/tests/test_workflow.py
index d543cc5d..626fa667 100644
--- a/tests/test_workflow.py
+++ b/tests/test_workflow.py
@@ -22,6 +22,8 @@
 
 from workflow import Workflow
 
+from .conftest import env
+
 
 def test_args(alfred4):
     """ARGV"""
@@ -106,5 +108,18 @@ def test_icons():
             assert os.path.exists(path)
 
 
+def test_debugging(alfred4):
+    """Debugging"""
+    tests = [
+        ('', False),
+        ('0', False),
+        ('1', True),
+    ]
+    for s, wanted in tests:
+        with env(alfred_debug=s):
+            wf = Workflow()
+            assert wf.debugging == wanted, "unexpected debugging"
+
+
 if __name__ == '__main__':  # pragma: no cover
     pytest.main([__file__])
diff --git a/workflow/version b/workflow/version
index 71437d03..a537514b 100644
--- a/workflow/version
+++ b/workflow/version
@@ -1 +1 @@
-1.37
\ No newline at end of file
+1.37.1
\ No newline at end of file
diff --git a/workflow/workflow.py b/workflow/workflow.py
index 584f376e..2a057b0b 100644
--- a/workflow/workflow.py
+++ b/workflow/workflow.py
@@ -1052,31 +1052,30 @@ def alfred_env(self):
         data = {}
 
         for key in (
-                'alfred_debug',
-                'alfred_preferences',
-                'alfred_preferences_localhash',
-                'alfred_theme',
-                'alfred_theme_background',
-                'alfred_theme_subtext',
-                'alfred_version',
-                'alfred_version_build',
-                'alfred_workflow_bundleid',
-                'alfred_workflow_cache',
-                'alfred_workflow_data',
-                'alfred_workflow_name',
-                'alfred_workflow_uid',
-                'alfred_workflow_version'):
-
-            value = os.getenv(key)
-
-            if isinstance(value, str):
-                if key in ('alfred_debug', 'alfred_version_build',
-                           'alfred_theme_subtext'):
+                'debug',
+                'preferences',
+                'preferences_localhash',
+                'theme',
+                'theme_background',
+                'theme_subtext',
+                'version',
+                'version_build',
+                'workflow_bundleid',
+                'workflow_cache',
+                'workflow_data',
+                'workflow_name',
+                'workflow_uid',
+                'workflow_version'):
+
+            value = os.getenv('alfred_' + key, '')
+
+            if value:
+                if key in ('debug', 'version_build', 'theme_subtext'):
                     value = int(value)
                 else:
                     value = self.decode(value)
 
-            data[key[7:]] = value
+            data[key] = value
 
         self._alfred_env = data
 
@@ -1113,7 +1112,7 @@ def debugging(self):
         :rtype: ``bool``
 
         """
-        return self.alfred_env.get('debug') == '1'
+        return self.alfred_env.get('debug') == 1
 
     @property
     def name(self):