diff --git a/pygmt/base_plotting.py b/pygmt/base_plotting.py
index a978b36d9bd..344ba9b9807 100644
--- a/pygmt/base_plotting.py
+++ b/pygmt/base_plotting.py
@@ -675,7 +675,7 @@ def legend(self, spec=None, position="JTR+jTR+o0.2c", box="+gwhite+p1p", **kwarg
             lib.call_module("legend", arg_str)
 
     @fmt_docstring
-    @use_alias(R="region", J="projection")
+    @use_alias(R="region", J="projection", B="frame")
     @kwargs_to_strings(
         R="sequence",
         textfiles="sequence_space",