diff --git a/taca/analysis/analysis_element.py b/taca/analysis/analysis_element.py
index 20bc0c80..189cf01d 100755
--- a/taca/analysis/analysis_element.py
+++ b/taca/analysis/analysis_element.py
@@ -6,8 +6,6 @@
 
 from taca.element.Element_Runs import Aviti_Run
 from taca.utils.config import CONFIG
-from taca.utils import statusdb
-
 
 logger = logging.getLogger(__name__)
 
diff --git a/taca/analysis/cli.py b/taca/analysis/cli.py
index 2e433a4c..131e78e0 100644
--- a/taca/analysis/cli.py
+++ b/taca/analysis/cli.py
@@ -3,8 +3,7 @@
 import click
 
 from taca.analysis import analysis as an
-from taca.analysis import analysis_nanopore
-from taca.analysis import analysis_element
+from taca.analysis import analysis_element, analysis_nanopore
 
 
 @click.group()
diff --git a/taca/element/Element_Runs.py b/taca/element/Element_Runs.py
index a86e7d8e..b3888c55 100644
--- a/taca/element/Element_Runs.py
+++ b/taca/element/Element_Runs.py
@@ -1,6 +1,6 @@
+import json
 import logging
 import os
-import json
 from datetime import datetime
 
 from taca.utils import misc
@@ -63,7 +63,7 @@ def start_demux(self):
         with chdir(self.run_dir):
             cmd = self.generate_demux_command()
             misc.call_external_command_detached(
-                cmd, with_log_files=True, prefix=f"demux_"
+                cmd, with_log_files=True, prefix="demux_"
             )
             logger.info(
                 "Bases2Fastq conversion and demultiplexing "