diff --git a/srchproc.py b/srchproc.py
index 3ee56b3..479a8b8 100644
--- a/srchproc.py
+++ b/srchproc.py
@@ -10,8 +10,8 @@ class Proc:
     """
     Find a running process from Python
     """
-    @staticmethod
-    def list_windows():
+    @classmethod
+    def _list_windows(cls):
         """
         Find all running process with wmi
         :return: list of dictionaries with descriptions of found processes
@@ -35,8 +35,8 @@ class Proc:
                 execlist.append({'execpid': execpid, 'exename': exename, 'exepath': exepath, 'cmdline': cmdline})
         return execlist
 
-    @staticmethod
-    def list_linux():
+    @classmethod
+    def _list_linux(cls):
         """
         Find all running process with ps
         :return: list of dictionaries with descriptions of found processes
@@ -52,23 +52,23 @@ class Proc:
                 execlist.append({'execpid': execpid, 'exename': exename, 'exepath': exepath, 'cmdline': cmdline})
         return execlist
 
-    @staticmethod
-    def list():
+    @classmethod
+    def list(cls):
         """
         Find all running process
         :return: list of dictionaries with descriptions of found processes
         """
         if platform.startswith('linux'):
-            return Proc.list_linux()
+            return cls._list_linux()
         elif platform.startswith('win32'):
-            return Proc.list_windows()
+            return cls._list_windows()
         elif platform.startswith('darwin'):
-            return Proc.list_linux()
+            return cls._list_linux()
         else:
             return None
 
-    @staticmethod
-    def search(find: str, exclude: str = None):
+    @classmethod
+    def search(cls, find: str, exclude: str = None):
         """
         Find specified processes
         :param find: find process pid, name or arguments
@@ -76,7 +76,7 @@ class Proc:
         :return: list of dictionaries with descriptions of found processes
         """
         proc_found = []
-        for proc in Proc.list():
+        for proc in cls.list():
             if exclude and (exclude in proc['execpid'] or exclude in proc['exename'] or
                             exclude in proc['exepath'] or exclude in proc['cmdline']):
                 pass