diff --git a/doc/src/pair_lj_smooth.rst b/doc/src/pair_lj_smooth.rst
index d79c762f16..03997b7c3d 100644
--- a/doc/src/pair_lj_smooth.rst
+++ b/doc/src/pair_lj_smooth.rst
@@ -1,10 +1,12 @@
 .. index:: pair_style lj/smooth
 .. index:: pair_style lj/smooth/omp
+.. index:: pair_style lj/smooth/gpu
 
 pair_style lj/smooth command
 ============================
 
 Accelerator Variants: *lj/smooth/omp*
+
 Accelerator Variants: *lj/smooth/gpu*
 
 Syntax