diff --git a/pgmon.py b/pgmon.py
index e777b3e..e1113eb 100755
--- a/pgmon.py
+++ b/pgmon.py
@@ -5,19 +5,12 @@ import logging
 import socket
 import sys
 import threading
-
-if "pytest" in sys.modules:
-    # Conditional modules are needed for tests, so import them if this is a test
-    import pytest
-
-    @pytest.fixture(scope="session", autouse=True)
-    def pytest_imports():
-        import psycopg2
-        import psycopg2.extras
-        import queue
-        import os
-        import signal
-        import json
+import psycopg2
+import psycopg2.extras
+import queue
+import os
+import signal
+import json
 
 #
 # Errors
@@ -72,7 +65,7 @@ class Config:
         self.user = 'postgres'              # DB user
         self.password = None                # DB password
         self.dbname = 'postgres'            # DB name
-        
+
         self.metrics = {}                   # Metrics
 
         # Dynamic values
@@ -90,7 +83,7 @@ class Config:
                     continue
                 elif line == '':
                     continue
-                
+
                 (key, value) = line.split('=', 1)
                 if value is None:
                     raise InvalidConfigError("{}: {}", config_file, line)
@@ -127,7 +120,7 @@ class Config:
         (name, ret_type, version, sql) = metric_def.split(':', 3)
         if sql is None:
             raise InvalidConfigError
-        
+
         if sql.startswith('file:'):
             (_,path) = sql.split(':', 1)
             with open(path, 'r') as f:
@@ -171,7 +164,7 @@ class DB:
         with self.conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cur:
             cur.execute(sql, args)
             return(cur.fetchall())
-    
+
     def close(self):
         try:
             if self.conn is not None:
@@ -270,7 +263,7 @@ class IPC:
             except OSError:
                 if os.path.exists(self.config.ipc_socket):
                     raise
-            
+
             # Create the socket
             self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
             # Set a timeout for accepting connections to be able to catch signals
@@ -285,7 +278,7 @@ class IPC:
 
         else:
             raise RuntimeError
-    
+
     def connect(self):
         """
         Establish a connection to a socket
@@ -336,7 +329,7 @@ class Agent:
             conn = ipc.connect()
 
             # Send a request
-            ipc.send(conn, "{},{}".format(key, ",".join(args)))
+            ipc.send(conn, "{},{}".format(key, args))
 
             # Wait for a response
             res = ipc.recv(conn)
@@ -355,13 +348,6 @@ class Server:
     """
     @staticmethod
     def run(config):
-        import psycopg2
-        import psycopg2.extras
-        import queue
-        import os
-        import signal
-        import json
-
         # Set up the signal handler
         signal.signal(signal.SIGINT, signal_handler)
 
@@ -376,14 +362,14 @@ class Server:
 
         # Listen on ipc socket
         ipc = IPC(config, 'server')
-        
+
         while True:
             # Wait for a request connection
             try:
                 conn = ipc.accept()
             except socket.timeout:
                 conn = None
-            
+
             # See if we should exit
             if not running:
                 break
@@ -397,10 +383,10 @@ class Server:
 
             # Receive ipc request (csv)
             try:
-                (key, args_csv) = req_csv.split(',', 1)
+                (key, args_str) = req_csv.split(',', 1)
                 args_dict = {}
-                if args_csv != "":
-                    for (k, v) in [a.split('=', 1) for a in args_csv.split(',')]:
+                if args_str!= "":
+                    for (k, v) in [a.split('=', 1) for a in args_str.split(';')]:
                         args_dict[k] = v
             except socket.timeout:
                 print("IPC communication timeout receiving request")
@@ -421,7 +407,7 @@ class Server:
                 print("Failed to queue request")
                 req.set_result("ERROR: Queue timeout")
                 continue
-            
+
             # Spawn a thread to wait for the result
             r = Responder(config, ipc, conn, req)
             r.start()
@@ -543,10 +529,10 @@ def main():
 
     # Operational mode
     parser.add_argument('-m', '--mode', choices=['agent', 'server'], required=True)
-    
+
     # Agent options
     parser.add_argument('-k', '--key')
-    parser.add_argument('-a', '--args', nargs='*', default=[])
+    parser.add_argument('-a', '--args')
 
     args = parser.parse_args()
 
@@ -590,8 +576,8 @@ class TestRequest:
         req1.set_result('blah')
         assert not req1.complete.locked()
         assert 'blah' == req1.get_result()
-        
-        
+
+
 
 class TestMetric:
     def test_metric_creation(self):
@@ -615,7 +601,7 @@ class TestMetric:
         # Make sure added versions are correct
         assert m1.versions[0].sql == 'default'
         assert m1.versions[120003].sql == 'v12.3'
-    
+
     def test_metric_get_version(self):
         # Test retrieving metric versions
         m1 = Metric('foo', 'value')
@@ -630,8 +616,8 @@ class TestMetric:
 
         # Make sure cache is set
         assert m1.cached is not None
-        assert m1.cached_version is 110003
-        
+        assert m1.cached_version == 110003
+
         # Make sure returned value changes with version
         assert m1.get_version(120000).sql == 'v12.0'
         assert m1.get_version(150005).sql == 'v12.0'
diff --git a/pgmon_userparameter.conf b/pgmon_userparameter.conf
new file mode 100644
index 0000000..d6ba38a
--- /dev/null
+++ b/pgmon_userparameter.conf
@@ -0,0 +1 @@
+UserParameter=pgmon[*],/usr/local/bin/pgmon.py -c /etc/zabbix/pgmon.cfg -a "$1"