diff --git a/docs/docs/term_index.xml b/docs/docs/term_index.xml
index 037e37d87..f2a8fa58a 100644
--- a/docs/docs/term_index.xml
+++ b/docs/docs/term_index.xml
@@ -275,6 +275,7 @@
          <term file="ml.html" name="radial_basis_kernel"/>
 
 
+         <term file="ml.html" name="unsorted sparse vectors"/>
          <term file="ml.html" name="sparse vectors"/>
          <term file="ml.html" name="sparse_linear_kernel"/>
          <term file="ml.html" name="sparse_polynomial_kernel"/>