diff --git a/ip/link_gre.c b/ip/link_gre.c
index f55c40c7..896bb19a 100644
--- a/ip/link_gre.c
+++ b/ip/link_gre.c
@@ -281,11 +281,11 @@ get_failed:
 		} else if (strcmp(*argv, "encap-udp6-csum") == 0) {
 			encapflags |= TUNNEL_ENCAP_FLAG_CSUM6;
 		} else if (strcmp(*argv, "noencap-udp6-csum") == 0) {
-			encapflags |= ~TUNNEL_ENCAP_FLAG_CSUM6;
+			encapflags &= ~TUNNEL_ENCAP_FLAG_CSUM6;
 		} else if (strcmp(*argv, "encap-remcsum") == 0) {
 			encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
 		} else if (strcmp(*argv, "noencap-remcsum") == 0) {
-			encapflags |= ~TUNNEL_ENCAP_FLAG_REMCSUM;
+			encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
 		} else if (strcmp(*argv, "external") == 0) {
 			metadata = 1;
 		} else if (strcmp(*argv, "ignore-df") == 0) {
diff --git a/ip/link_ip6tnl.c b/ip/link_ip6tnl.c
index 0a471c2d..84205b12 100644
--- a/ip/link_ip6tnl.c
+++ b/ip/link_ip6tnl.c
@@ -301,7 +301,7 @@ get_failed:
 		} else if (strcmp(*argv, "encap-remcsum") == 0) {
 			encapflags |= TUNNEL_ENCAP_FLAG_REMCSUM;
 		} else if (strcmp(*argv, "noencap-remcsum") == 0) {
-			encapflags |= ~TUNNEL_ENCAP_FLAG_REMCSUM;
+			encapflags &= ~TUNNEL_ENCAP_FLAG_REMCSUM;
 		} else if (strcmp(*argv, "external") == 0) {
 			metadata = 1;
 		} else