diff --git a/src/CalcStats.py b/src/CalcStats.py
index 05c42898b0a0a7f93b881a85300d7ea966667413..9e0f0693093b96ae88b57a1c7e23498bcce1a541 100755
--- a/src/CalcStats.py
+++ b/src/CalcStats.py
@@ -811,7 +811,7 @@ class DeviceObj:
 						# calculate the correlation, numpy indexes start from 1 
 						self.corr[t_idx] = np.corrcoef(sensor_array,target_array)[0,1]
 						# low pass filter correlation
-						# if data is 0/inf/NaN keep the previous value in order to avoid corrupting the filtered value
+						# if data is 0/inf/NaN keep the previous value in order to avoid corrupting the filtered value (check)
 						if (self.corr[t_idx] == 0) or np.isnan(self.corr[t_idx]) or np.isinf(self.corr[t_idx])
 							self.lp_filter_corr[t_idx] = self.old_lp_filter_corr[t_idx]
 						else