diff --git a/doc/src/Build_extras.txt b/doc/src/Build_extras.txt
index b0bf0c9cd6..92b6314004 100644
--- a/doc/src/Build_extras.txt
+++ b/doc/src/Build_extras.txt
@@ -802,7 +802,7 @@ dir, using a command like these, which simply invoke the
 lib/h5md/Install.py script with the specified args:
 
 make lib-h5md                     # print help message
-make lib-hm5d args="-m h5cc"      # build with h5cc compiler :pre
+make lib-h5md args="-m h5cc"      # build with h5cc compiler :pre
 
 The build should produce two files: lib/h5md/libch5md.a and
 lib/h5md/Makefile.lammps.  The latter is copied from an existing