diff --git a/src/adwin_control/servo.py b/src/adwin_control/servo.py
index 12bf18b3219c52d27363b725f8abc1a98c43af3c..6fdfead56811a744eac03f48e6a77a8260a5a0ea 100644
--- a/src/adwin_control/servo.py
+++ b/src/adwin_control/servo.py
@@ -109,7 +109,7 @@ class Servo:
         Choose an optional name for this servo.
     """
 
-    DONT_SERIALIZE = ['_adw', '_subProcess', '_fifoBuffer']
+    DONT_SERIALIZE = ['_adw', '_subProcess', '_fifoBuffer', '_tempFeedback']
     JSONPICKLE = ['servoDesign']
     MIN_REFRESH_TIME = .02
     DEFAULT_FILTERS = [
diff --git a/src/tests/test_servo.py b/src/tests/test_servo.py
index fb9be5a703cc3e958939f26666650e1085fffd8d..8b87a5c8b9f73db13f9931fd1441787042c1f40c 100644
--- a/src/tests/test_servo.py
+++ b/src/tests/test_servo.py
@@ -531,6 +531,7 @@ class TestServo(unittest.TestCase):
         self.s.servoDesign.integrator(400)
         dc = io.read('{}/fra.csv'.format(tests_dir))
         self.s.servoDesign.plant = dc
+        self.s.tempFeedbackStart(1, (1, 1))
         servoDesign_str = self.s.servoDesign.__str__()
         plant = self.s.servoDesign.plant.copy()
         self.s.saveJsonToFile('servo.json')