diff --git a/scripts/acoustics.py b/scripts/acoustics.py
index 54679e9a75d4f4d9581a5ffb62e8aab18d651021..a812b990fc15b857091f12fd8ace9bd18dbb2529 100644
--- a/scripts/acoustics.py
+++ b/scripts/acoustics.py
@@ -24,11 +24,11 @@ from datetime import datetime
 
 import km3pipe as kp
 
-parser = argparse.ArgumentParser(description='Online_monitoring')
-parser.add_argument('-d', dest='det_id', type=str, nargs=1, required=True,
-                    help='The detector ID (e.g. D_ORCA005)')
-parser.add_argument('-o', dest='plot_dir', type=str, nargs=1, required=True,
-                    help='Directory in which the plot is saved')
+parser = argparse.ArgumentParser(description = 'Online_monitoring')
+parser.add_argument('-d', dest = 'det_id', type = str, nargs = 1, required = True,
+                    help = 'The detector ID (e.g. D_ORCA005)')
+parser.add_argument('-o', dest = 'plot_dir', type = str, nargs = 1, required = True,
+                    help = 'Directory in which the plot is saved')
 
 args = parser.parse_args()
 detid = args.det_id[0]