diff --git a/doc/pair_gran.html b/doc/pair_gran.html
index a5ccb35c6b..a39614aae5 100644
--- a/doc/pair_gran.html
+++ b/doc/pair_gran.html
@@ -123,7 +123,7 @@ constant with units of force/distance.  In the Hertzian case, Kn is
 like a non-linear spring constant with units of force/area or
 pressure, and as shown in the <A HREF = "#Zhang">(Zhang)</A> paper, Kn = 4G /
 (3(1-nu)) where nu = the Poisson ratio, G = shear modulus = E /
-(1(1+nu)), and E = Young's modulus.  Similarly, Kt = 8G / (2-nu).
+(2(1+nu)), and E = Young's modulus.  Similarly, Kt = 8G / (2-nu).
 Thus in the Hertzian case Kn and Kt can be set to values that
 corresponds to properties of the material being modeled.  This is also
 true in the Hookean case, except that a spring constant must be chosen
diff --git a/doc/pair_gran.txt b/doc/pair_gran.txt
index 5680ae4128..275fc9e0e8 100644
--- a/doc/pair_gran.txt
+++ b/doc/pair_gran.txt
@@ -113,7 +113,7 @@ constant with units of force/distance.  In the Hertzian case, Kn is
 like a non-linear spring constant with units of force/area or
 pressure, and as shown in the "(Zhang)"_#Zhang paper, Kn = 4G /
 (3(1-nu)) where nu = the Poisson ratio, G = shear modulus = E /
-(1(1+nu)), and E = Young's modulus.  Similarly, Kt = 8G / (2-nu).
+(2(1+nu)), and E = Young's modulus.  Similarly, Kt = 8G / (2-nu).
 Thus in the Hertzian case Kn and Kt can be set to values that
 corresponds to properties of the material being modeled.  This is also
 true in the Hookean case, except that a spring constant must be chosen