diff --git a/vpnsetup.sh b/vpnsetup.sh
index bfe9fcf..2b5df53 100755
--- a/vpnsetup.sh
+++ b/vpnsetup.sh
@@ -247,7 +247,7 @@ conn shared
   dpdaction=clear
   ike=3des-sha1,3des-sha2,aes-sha1,aes-sha1;modp1024,aes-sha2,aes-sha2;modp1024
   phase2alg=3des-sha1,3des-sha2,aes-sha1,aes-sha2
-  sha2-truncbug=no
+  sha2-truncbug=yes
 
 conn l2tp-psk
   auto=add
diff --git a/vpnsetup_centos.sh b/vpnsetup_centos.sh
index f70157b..c96ef5a 100755
--- a/vpnsetup_centos.sh
+++ b/vpnsetup_centos.sh
@@ -235,7 +235,7 @@ conn shared
   dpdaction=clear
   ike=3des-sha1,3des-sha2,aes-sha1,aes-sha1;modp1024,aes-sha2,aes-sha2;modp1024
   phase2alg=3des-sha1,3des-sha2,aes-sha1,aes-sha2
-  sha2-truncbug=no
+  sha2-truncbug=yes
 
 conn l2tp-psk
   auto=add