diff --git a/doc/Eqs/stress_tensor.jpg b/doc/Eqs/stress_tensor.jpg
index f6ec0eeef7..a62d6aa973 100644
Binary files a/doc/Eqs/stress_tensor.jpg and b/doc/Eqs/stress_tensor.jpg differ
diff --git a/doc/Eqs/stress_tensor.tex b/doc/Eqs/stress_tensor.tex
index d7be76e5bd..f0d046ca23 100644
--- a/doc/Eqs/stress_tensor.tex
+++ b/doc/Eqs/stress_tensor.tex
@@ -12,6 +12,7 @@ S_{ab} & = & - \left[ m v_a v_b +
 				   r_{3_a} F_{3_b} + r_{4_a} F_{4_b}) + \right. \\
 && \left. \frac{1}{4} \sum_{n = 1}^{N_i} (r_{1_a} F_{1_b} + r_{2_a} F_{2_b} + 
                                           r_{3_a} F_{3_b} + r_{4_a} F_{4_b}) +
+   {\rm Kspace}(r_{i_a},F_{i_b}) + 
    \sum_{n = 1}^{N_f} r_{i_a} F_{i_b} \right]
 \end{eqnarray*}