diff --git a/scripts/planktoscope/imager/__init__.py b/scripts/planktoscope/imager/__init__.py
index 7916496..bc29cbd 100644
--- a/scripts/planktoscope/imager/__init__.py
+++ b/scripts/planktoscope/imager/__init__.py
@@ -543,7 +543,7 @@ class ImagerProcess(multiprocessing.Process):
 
         if "object_date" not in self.__global_metadata:
             # If this path exists, then ids are reused when they should not
-            logger.error(f"The metadata did not contain object_date!")
+            logger.error("The metadata did not contain object_date!")
             self.imager_client.client.publish(
                 "status/imager",
                 '{"status":"Configuration update error: object_date is missing!"}',
@@ -768,7 +768,6 @@ class ImagerProcess(multiprocessing.Process):
         logger.success("Imager process shut down! See you!")
 
 
-# This is called if this script is launched directly
+# TODO This should be a test suite for this library
 if __name__ == "__main__":
-    # TODO This should be a test suite for this library
     pass
diff --git a/scripts/planktoscope/stepper.py b/scripts/planktoscope/stepper.py
index f884fd7..18836ac 100644
--- a/scripts/planktoscope/stepper.py
+++ b/scripts/planktoscope/stepper.py
@@ -253,7 +253,7 @@ class StepperProcess(multiprocessing.Process):
             logger.error(f"{self.stepper_type} is what was supplied")
             return
 
-        logger.info(f"Stepper initialisation is over")
+        logger.info("Stepper initialisation is over")
 
     def __message_pump(self, last_message):
         logger.debug("We have received a pumping command")
@@ -295,7 +295,7 @@ class StepperProcess(multiprocessing.Process):
             # Get number of steps from the different received arguments
             flowrate = float(last_message["flowrate"])
             if flowrate == 0:
-                logger.error(f"The flowrate should not be == 0")
+                logger.error("The flowrate should not be == 0")
                 self.actuator_client.client.publish(
                     "status/pump", '{"status":"Error, The flowrate should not be == 0"}'
                 )