diff --git a/ci/release/template/man/d2.1 b/ci/release/template/man/d2.1
index 6000ffc56..d3d733087 100644
--- a/ci/release/template/man/d2.1
+++ b/ci/release/template/man/d2.1
@@ -66,7 +66,7 @@ Port listening address when used with
 .It Fl t , -theme Ar 0
 Set the diagram theme ID
 .Ns .
-.It Fl t , -dark-theme Ar 0
+.It Fl -dark-theme Ar -1
 the diagram dark theme ID. When left unset only the theme will be applied
 .Ns .
 .It Fl s , -sketch Ar false