diff --git a/bin/sh/sh.1 b/bin/sh/sh.1
index 84dcdde27808..01cb7756f11d 100644
--- a/bin/sh/sh.1
+++ b/bin/sh/sh.1
@@ -1628,7 +1628,7 @@ form begins with a subshell,
 the
 .Li $(
 and
-.Li (
+.Li (\&
 must be separated by whitespace
 to avoid ambiguity with arithmetic expansion.
 .Ss Arithmetic Expansion