diff --git a/net/aria2/Portfile b/net/aria2/Portfile
index a7e41734a1a42..6f29c4f9b8861 100644
--- a/net/aria2/Portfile
+++ b/net/aria2/Portfile
@@ -35,3 +35,8 @@ configure.args      --with-gnutls --with-libgnutls-prefix=${prefix} \
                     --with-libintl-prefix=${prefix} \
                     --with-xml-prefix=${prefix} \
                     --without-sqlite3
+
+# appletls not available on 10.6 or earlier
+if {${os.platform} eq "darwin" && ${os.major} <= 10} {
+        configure.args-append "--without-appletls"
+}