diff --git a/Snap_rounding_2/doc_tex/Snap_rounding_2_ref/main.tex b/Snap_rounding_2/doc_tex/Snap_rounding_2_ref/main.tex
index 84570f595ab..600d820d4b6 100644
--- a/Snap_rounding_2/doc_tex/Snap_rounding_2_ref/main.tex
+++ b/Snap_rounding_2/doc_tex/Snap_rounding_2_ref/main.tex
@@ -1,3 +1,3 @@
-\input{Snap_rounding_2_ref/snap_ref}
+\input{Snap_rounding_2_ref/intro}
 \input{Snap_rounding_2_ref/snap_concept}
 \input{Snap_rounding_2_ref/Snap_rounding_traits_2}