diff --git a/pid.c b/pid.c
--- a/pid.c
+++ b/pid.c
@@ -18,7 +18,7 @@ int16_t pid_update(therm_settings_t* set
   int32_t temp = (status->temp * 10) + temp_frac;
 
   // Calculate instantaneous error
-  int16_t error = status->setpoint * 10 - temp; // TODO: Use fixed point fraction
+  int16_t error = status->setpoint * 10 - temp;
 
   // Proportional component
   int32_t p_term = set->val.k_p * error;