diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index bb1aeb98b6dad..b41e96ac0dfe9 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -158,6 +158,9 @@ OPTIONS
 		  When showing BPF programs, show file names of pinned
 		  programs.
 
+	-m, --mapcompat
+		  Allow loading maps with unknown map definitions.
+
 EXAMPLES
 ========
 **# bpftool prog show**