diff --git a/qdarkstyle/__init__.py b/qdarkstyle/__init__.py
index fc1779f..37b834c 100644
--- a/qdarkstyle/__init__.py
+++ b/qdarkstyle/__init__.py
@@ -55,7 +55,7 @@ import copy
 if sys.version_info >= (3, 4):
     import importlib
 
-__version__ = "2.6.5"
+__version__ = "2.6.6"
 
 
 QT_BINDINGS = ['PyQt4', 'PyQt5', 'PySide', 'PySide2']
@@ -211,7 +211,7 @@ def load_stylesheet(pyside=True):
     warnings.warn(
         "load_stylesheet() will not receive pyside parameter in version 3. "
         "Set QtPy environment variable to specify the Qt binding insteady.",
-        FutureWarning
+        PendingDeprecationWarning
     )
     # Smart import of the rc file
 
@@ -222,7 +222,7 @@ def load_stylesheet(pyside=True):
         # Detect the PySide version available
         try:
             import PySide
-        except ImportError: # Compatible with py27
+        except ImportError:  # Compatible with py27
             import PySide2
             pyside_ver = 2
         else: