diff --git a/doc/Makefile b/doc/Makefile
index fbb9de2d84..d117c2d98c 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -48,6 +48,7 @@ help:
 	@echo "  clean-all  reset the entire build environment"
 	@echo "  txt2html   build txt2html tool"
 	@echo "  anchor_check  scan for duplicate anchor labels"
+	@echo "  spelling   spell-check the manual"
 
 # ------------------------------------------
 
diff --git a/doc/src/Manual_build.txt b/doc/src/Manual_build.txt
index 42c77c4500..af67752994 100644
--- a/doc/src/Manual_build.txt
+++ b/doc/src/Manual_build.txt
@@ -65,6 +65,8 @@ make epub         # generate LAMMPS.epub in ePUB format using Sphinx
 make mobi         # generate LAMMPS.mobi in MOBI format using ebook-convert
 make clean        # remove intermediate RST files created by HTML build
 make clean-all    # remove entire build folder and any cached data :pre
+make anchor_check # check for duplicate anchor labels
+make spelling     # spell-check the manual
 
 :line