diff --git a/doc/src/fix_rigid.rst b/doc/src/fix_rigid.rst
index a143817303..8756e72db1 100644
--- a/doc/src/fix_rigid.rst
+++ b/doc/src/fix_rigid.rst
@@ -1,40 +1,49 @@
 .. index:: fix rigid
+.. index:: fix rigid/omp
+.. index:: fix rigid/nve
+.. index:: fix rigid/nve/omp
+.. index:: fix rigid/nvt
+.. index:: fix rigid/nvt/omp
+.. index:: fix rigid/npt
+.. index:: fix rigid/npt/omp
+.. index:: fix rigid/nph
+.. index:: fix rigid/nph/omp
+.. index:: fix rigid/small
+.. index:: fix rigid/small/omp
+.. index:: fix rigid/nve/small
+.. index:: fix rigid/nvt/small
+.. index:: fix rigid/npt/small
+.. index:: fix rigid/nph/small
 
 fix rigid command
 =================
 
-fix rigid/omp command
-=====================
+Accelerator Styles: *rigid/omp*
 
 fix rigid/nve command
 =====================
 
-fix rigid/nve/omp command
-=========================
+Accelerator Styles: *rigid/nve/omp*
 
 fix rigid/nvt command
 =====================
 
-fix rigid/nvt/omp command
-=========================
+Accelerator Styles: *rigid/nvt/omp*
 
 fix rigid/npt command
 =====================
 
-fix rigid/npt/omp command
-=========================
+Accelerator Styles: *rigid/npt/omp*
 
 fix rigid/nph command
 =====================
 
-fix rigid/nph/omp command
-=========================
+Accelerator Styles: *rigid/nph/omp*
 
 fix rigid/small command
 =======================
 
-fix rigid/small/omp command
-===========================
+Accelerator Styles: *rigid/small/omp*
 
 fix rigid/nve/small command
 ===========================