diff --git a/Understanding-Parameters.md b/Understanding-Parameters.md
index 482fdd4..d7eb136 100644
--- a/Understanding-Parameters.md
+++ b/Understanding-Parameters.md
@@ -81,7 +81,7 @@ Calculates the scalp coupling index of the participant over multiple time window
 - SCI_TIME_WINDOW (int, default=3): Value in seconds to evaluate the signal over repeatedly.
 - SCI_THRESHOLD (float, default=0.6): Value between 0-1 where 1 is perfect coupling and 0 is poor coupling. A good threshold value would be at least over 0.5.
 
-Note: If SCI is set to False, SCI_USE_HEAR_RATE_BAND, SCI_TIME_WINDOW, & SCI_THRESHOLD will be ignored.
+Note: If SCI is set to False, SCI_USE_HEART_RATE_BAND, SCI_TIME_WINDOW, & SCI_THRESHOLD will be ignored.
 Note: If SCI_USE_HEART_RATE_BAND is set to False, ⚠️SCI_LOW_FREQ & ⚠️SCI_HIGH_FREQ will be ignored.
 
 ## Signal to Noise Ratio