diff --git a/mbtrack2/impedance/resistive_wall.py b/mbtrack2/impedance/resistive_wall.py
index 0c968ebfc37655eeb1d85e93733e9d81d48a1049..d43abe109ea4172745695d9609202d66cabea15c 100644
--- a/mbtrack2/impedance/resistive_wall.py
+++ b/mbtrack2/impedance/resistive_wall.py
@@ -186,8 +186,11 @@ class CircularResistiveWall(WakeField):
         to the characteristic time t0.
         
         Eq. (11) in [1] is completely identical to Eq. (25) in [2].
-        Corrected the typos in the last two terms in exact expression
-        (Eq. (11), of [1]).
+
+        There are typos in both Eq. (11) in [1] and Eq. (25) in [2].
+        Corrected the typos in the last two terms of exact expression
+        for transverse wake function in Eq. (11), of [1].
+        It is necessary to multiply Eq. (25) in [2] by c*t0.
 
         Parameters
         ----------