diff --git a/foosball/sink/opencv.py b/foosball/sink/opencv.py
index 45c9d6a..c164980 100644
--- a/foosball/sink/opencv.py
+++ b/foosball/sink/opencv.py
@@ -82,7 +82,7 @@ def __init__(self, config: CalibrationConfig, *args, **kwargs):
         self.init_config: CalibrationConfig = deepcopy(config)
 
     def reset(self):
-        print(f"Reset calibration config", end="\n\n\n")
+        print("Reset calibration config", end="\n\n\n")
         self.set_slider_config(self.init_config)
 
     @abstractmethod
diff --git a/foosball/tracking/ai.py b/foosball/tracking/ai.py
index c8559dd..105b7a7 100644
--- a/foosball/tracking/ai.py
+++ b/foosball/tracking/ai.py
@@ -10,7 +10,7 @@
 from .render import r_text, BLACK
 from ..detectors.color import GoalColorConfig, BallColorDetector, BallColorConfig, GoalColorDetector
 from ..models import FrameDimensions, Frame, InfoLog, Verbosity
-from ..sink.opencv import DisplaySink, Key, BallColorCalibration, GoalColorCalibration, CalibrationConfig
+from ..sink.opencv import DisplaySink, Key, BallColorCalibration, GoalColorCalibration
 from ..source import Source
 
 BLANKS = (' ' * 80)