diff --git a/amodem/calib.py b/amodem/calib.py
old mode 100755
new mode 100644
index cf911d1..6d9b4cf
--- a/amodem/calib.py
+++ b/amodem/calib.py
@@ -50,16 +50,3 @@ def recv(wave_record=wave.record, reporter=sys.stdout.write):
             reporter(fmt.format(coherence, amplitude, phase * 180/np.pi, peak))
     except KeyboardInterrupt:
         p.kill()
-
-
-if __name__ == '__main__':
-    import argparse
-    p = argparse.ArgumentParser()
-    sub = p.add_subparsers()
-    sub.add_parser('send').set_defaults(func=send)
-    sub.add_parser('recv').set_defaults(func=recv)
-    args = p.parse_args()
-    try:
-        args.func()
-    except KeyboardInterrupt:
-        pass
diff --git a/scripts/auto-calib.sh b/scripts/auto-calib.sh
index d97687d..c776e00 100755
--- a/scripts/auto-calib.sh
+++ b/scripts/auto-calib.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 killall -q aplay arecord
-python -m amodem.calib send &
+python -m calib send &
 SENDER_PID=$!
-python -m amodem.calib recv
+python -m calib recv
 
 kill -INT $SENDER_PID
diff --git a/scripts/calib.py b/scripts/calib.py
new file mode 100755
index 0000000..f969e4b
--- /dev/null
+++ b/scripts/calib.py
@@ -0,0 +1,9 @@
+from amodem import calib
+
+import argparse
+p = argparse.ArgumentParser()
+sub = p.add_subparsers()
+sub.add_parser('send').set_defaults(func=calib.send)
+sub.add_parser('recv').set_defaults(func=calib.recv)
+args = p.parse_args()
+args.func()