diff --git a/doc/man/sphinx-build.rst b/doc/man/sphinx-build.rst
index 8eaa109f921..a1fb9be4024 100644
--- a/doc/man/sphinx-build.rst
+++ b/doc/man/sphinx-build.rst
@@ -210,7 +210,7 @@ Options
 
 .. option:: --color
 
-   Do emit colored output. Auto-detected by default.
+   Emit colored output. Auto-detected by default.
 
    .. versionadded:: 1.6