diff --git a/doc/src/min_modify.rst b/doc/src/min_modify.rst
index e541571b7b..731d2ace62 100644
--- a/doc/src/min_modify.rst
+++ b/doc/src/min_modify.rst
@@ -19,7 +19,7 @@ Syntax
          max = maximum distance for line search to move (distance units)
        *line* value = *backtrack* or *quadratic* or *forcezero* or *spin_cubic* or *spin_none*
          backtrack,quadratic,forcezero,spin_cubic,spin_none = style of linesearch to use
-       *norm* value = *two* or *max*
+       *norm* value = *two* or *inf* or *max*
          two = Euclidean two-norm (length of 3N vector)
          inf = max force component across all 3-vectors
          max = max force norm across all 3-vectors