diff --git a/README.md b/README.md
index e53ddbc..c47c66e 100644
--- a/README.md
+++ b/README.md
@@ -299,9 +299,9 @@ Note: type `/start` to launch the selected plugins.
 Add new functionalities to user.py by creating new scripts inside the `plugins` folder. You class must inherit from yapsy.IPlugin, see below a minimal example with `print` plugin:
 
 ```python
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
-class PluginPrint(plugintypes.IPluginExtended):
+class PluginPrint(IPluginExtended):
     def activate(self):
         print("Print activated")
 
diff --git a/openbci/plugins/csv_collect.py b/openbci/plugins/csv_collect.py
index 9829213..0ad5992 100755
--- a/openbci/plugins/csv_collect.py
+++ b/openbci/plugins/csv_collect.py
@@ -3,10 +3,10 @@
 import timeit
 import datetime
 
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
-class PluginCSVCollect(plugintypes.IPluginExtended):
+class PluginCSVCollect(IPluginExtended):
     def __init__(self, file_name="collect.csv", delim=",", verbose=False):
         now = datetime.datetime.now()
         self.time_stamp = '%d-%d-%d_%d-%d-%d' \
diff --git a/openbci/plugins/noise_test.py b/openbci/plugins/noise_test.py
index 120dc57..00fd59f 100755
--- a/openbci/plugins/noise_test.py
+++ b/openbci/plugins/noise_test.py
@@ -1,10 +1,10 @@
 from __future__ import print_function
 import timeit
 import numpy as np
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
-class PluginNoiseTest(plugintypes.IPluginExtended):
+class PluginNoiseTest(IPluginExtended):
     # update counters value
     def __call__(self, sample):
         # keep tract of absolute value of
diff --git a/plugin_interface.py b/openbci/plugins/plugin_interface.py
old mode 100755
new mode 100644
similarity index 94%
rename from plugin_interface.py
rename to openbci/plugins/plugin_interface.py
index 70550fe..8e59095
--- a/plugin_interface.py
+++ b/openbci/plugins/plugin_interface.py
@@ -1,6 +1,5 @@
 """
 Extends Yapsy IPlugin interface to pass information about the board to plugins.
-
 Fields of interest for plugins:
   args: list of arguments passed to the plugins
   sample_rate: actual sample rate of the board
@@ -8,12 +7,9 @@
   aux_channels: number of AUX channels
   
 If needed, plugins that need to report an error can set self.is_activated to False during activate() call.
-
 NB: because of how yapsy discovery system works, plugins must use the following syntax to inherit to use polymorphism (see http://yapsy.sourceforge.net/Advices.html):
-
-    import plugin_interface as plugintypes
-
-    class PluginExample(plugintypes.IPluginExtended):
+    from .plugin_interface import IPluginExtended 
+    class PluginExample(IPluginExtended):
        ...
 """
 
diff --git a/openbci/plugins/print.py b/openbci/plugins/print.py
index 32c5ce0..020045a 100755
--- a/openbci/plugins/print.py
+++ b/openbci/plugins/print.py
@@ -1,8 +1,8 @@
 from __future__ import print_function
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
-class PluginPrint(plugintypes.IPluginExtended):
+class PluginPrint(IPluginExtended):
     def activate(self):
         print("Print activated")
 
diff --git a/openbci/plugins/sample_rate.py b/openbci/plugins/sample_rate.py
index d4e9dc3..834a848 100755
--- a/openbci/plugins/sample_rate.py
+++ b/openbci/plugins/sample_rate.py
@@ -3,7 +3,7 @@
 import timeit
 from threading import Thread
 
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 # counter for sampling rate
 nb_samples_out = -1
@@ -36,7 +36,7 @@ def run(self):
             time.sleep(self.polling_interval)
 
 
-class PluginSampleRate(plugintypes.IPluginExtended):
+class PluginSampleRate(IPluginExtended):
     # update counters value
     def __call__(self, sample):
         global nb_samples_out
diff --git a/openbci/plugins/streamer_lsl.py b/openbci/plugins/streamer_lsl.py
index 0c4e2dd..ea6f922 100755
--- a/openbci/plugins/streamer_lsl.py
+++ b/openbci/plugins/streamer_lsl.py
@@ -2,7 +2,7 @@
 # Eg: ftp://sccn.ucsd.edu/pub/software/LSL/SDK/liblsl-Python-1.10.2.zip
 # put in "lib" folder (same level as user.py)
 from __future__ import print_function
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 from pylsl import StreamInfo, StreamOutlet
 import sys
 
@@ -13,7 +13,7 @@
 # Use LSL protocol to broadcast data using one stream for EEG,
 # one stream for AUX, one last for impedance testing
 # (on supported board, if enabled)
-class StreamerLSL(plugintypes.IPluginExtended):
+class StreamerLSL(IPluginExtended):
     # From IPlugin
     def activate(self):
         eeg_stream = "OpenBCI_EEG"
diff --git a/openbci/plugins/streamer_osc.py b/openbci/plugins/streamer_osc.py
index 828cd57..b02a901 100755
--- a/openbci/plugins/streamer_osc.py
+++ b/openbci/plugins/streamer_osc.py
@@ -2,13 +2,13 @@
 # requires python-osc
 from pythonosc import osc_message_builder
 from pythonosc import udp_client
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
 # Use OSC protocol to broadcast data (UDP layer), using "/openbci" stream.
 # (NB. does not check numbers of channel as TCP server)
 
-class StreamerOSC(plugintypes.IPluginExtended):
+class StreamerOSC(IPluginExtended):
     """
     Relay OpenBCI values to OSC clients
 
diff --git a/openbci/plugins/streamer_tcp_server.py b/openbci/plugins/streamer_tcp_server.py
index 077504f..d021bb8 100755
--- a/openbci/plugins/streamer_tcp_server.py
+++ b/openbci/plugins/streamer_tcp_server.py
@@ -4,7 +4,7 @@
 import select
 import struct
 import time
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
 # Simple TCP server to "broadcast" data to clients, handling deconnections.
@@ -34,7 +34,7 @@ def run(self):
             time.sleep(1)
 
 
-class StreamerTCPServer(plugintypes.IPluginExtended):
+class StreamerTCPServer(IPluginExtended):
     """
 
     Relay OpenBCI values to TCP clients
diff --git a/openbci/plugins/udp_server.py b/openbci/plugins/udp_server.py
index 833bbc4..9153567 100755
--- a/openbci/plugins/udp_server.py
+++ b/openbci/plugins/udp_server.py
@@ -15,7 +15,7 @@
 import json
 import socket
 
-import plugin_interface as plugintypes
+from .plugin_interface import IPluginExtended 
 
 
 # class PluginPrint(IPlugin):
@@ -48,7 +48,7 @@
 #     #     print(sample_string)
 
 
-class UDPServer(plugintypes.IPluginExtended):
+class UDPServer(IPluginExtended):
     def __init__(self, ip='localhost', port=8888):
         self.ip = ip
         self.port = port