diff --git a/functions/utility.py b/functions/utility.py
index ddea6d24797da21d3a01ebfb10e3844e17899586..7dc9ca79553c97ff1030d7b749ff2b26acc9b6ea 100644
--- a/functions/utility.py
+++ b/functions/utility.py
@@ -35,7 +35,7 @@ def plot_temp_over_time(
                                    `is_save` is True. Defaults to "image.svg".
 
     """
-    # TODO:
+    # TODO: Complete the function.
     # This line of code throws an exception. This is just to make sure you can see
     # all the code you need to refine. If you already know how to implement the program
     # or have done so, then you can safely delete the three lines of code below, as well
@@ -60,7 +60,7 @@ def get_plot_data_from_dataset(
         tuple[np.ndarray, np.ndarray, np.ndarray]: Data for plot in a tuple (temperature, time step, label of data).
 
     """
-    # TODO:
+    # TODO: Complete the function.
     # This line of code throws an exception. This is just to make sure you can see
     # all the code you need to refine. If you already know how to implement the program
     # or have done so, then you can safely delete the three lines of code below, as well
@@ -83,7 +83,7 @@ def cal_main_and_standard_deviation(data: np.ndarray) -> np.ndarray:
         np.ndarray: raw data with uncertainty in a 2D ndarray with shape (2, n).
 
     """
-    # TODO:
+    # TODO: Complete the function.
     # This line of code throws an exception. This is just to make sure you can see
     # all the code you need to refine. If you already know how to implement the program
     # or have done so, then you can safely delete the three lines of code below, as well
@@ -114,7 +114,7 @@ def get_start_end_temprature(
                              temperature second.
 
     """
-    # TODO:
+    # TODO: Complete the function.
     # Hint: thetemprature_data should contain the raw data of the sensors.
     # numpy.ndarray.flatten() function may be useful for multidimensionale arrays.
     # This line of code throws an exception. This is just to make sure you can see