diff --git a/python/trx/ctrl_if.py b/python/trx/ctrl_if.py
index a9050ef..7dee0f8 100644
--- a/python/trx/ctrl_if.py
+++ b/python/trx/ctrl_if.py
@@ -22,9 +22,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from grgsm import UDPLink
+from grgsm.trx import udp_link
 
-class CTRLInterface(UDPLink):
+class ctrl_if(udp_link):
 	def handle_rx(self, data):
 		if self.verify_req(data):
 			request = self.prepare_req(data)
diff --git a/python/trx/ctrl_if_bb.py b/python/trx/ctrl_if_bb.py
index b0d54f9..b08f62c 100644
--- a/python/trx/ctrl_if_bb.py
+++ b/python/trx/ctrl_if_bb.py
@@ -22,12 +22,12 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from ctrl_if import CTRLInterface
+from ctrl_if import ctrl_if
 
-class CTRLInterfaceBB(CTRLInterface):
+class ctrl_if_bb(ctrl_if):
 	def __init__(self, remote_addr, remote_port, bind_port, tb, pm):
 		print("[i] Init CTRL interface")
-		CTRLInterface.__init__(self, remote_addr, remote_port, bind_port)
+		ctrl_if.__init__(self, remote_addr, remote_port, bind_port)
 
 		# Set link to the follow graph (top block)
 		self.tb = tb
@@ -36,7 +36,7 @@ class CTRLInterfaceBB(CTRLInterface):
 
 	def shutdown(self):
 		print("[i] Shutdown CTRL interface")
-		CTRLInterface.shutdown(self)
+		ctrl_if.shutdown(self)
 
 	def parse_cmd(self, request):
 		# Power control
diff --git a/python/trx/fake_pm.py b/python/trx/fake_pm.py
index 1d76916..72cf771 100644
--- a/python/trx/fake_pm.py
+++ b/python/trx/fake_pm.py
@@ -24,7 +24,7 @@
 
 from random import randint
 
-class FakePM:
+class fake_pm:
 	# Freq. list for good power level
 	bts_list = []
 
diff --git a/python/trx/radio_if.py b/python/trx/radio_if.py
index c162f69..40fcabb 100644
--- a/python/trx/radio_if.py
+++ b/python/trx/radio_if.py
@@ -32,7 +32,7 @@ from math import pi
 from gnuradio import blocks
 from gnuradio import gr
 
-class RadioInterface(gr.top_block):
+class radio_if(gr.top_block):
 	# PHY specific variables
 	samp_rate = 2000000
 	shiftoff = 400e3
diff --git a/python/trx/udp_link.py b/python/trx/udp_link.py
index 0d90ec9..584a6ac 100644
--- a/python/trx/udp_link.py
+++ b/python/trx/udp_link.py
@@ -25,7 +25,7 @@
 import socket
 import select
 
-class UDPLink:
+class udp_link:
 	def __init__(self, remote_addr, remote_port, bind_port):
 		self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 		self.sock.bind(('0.0.0.0', bind_port))