diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_ktls.c b/tools/testing/selftests/bpf/prog_tests/sockmap_ktls.c
index 589b50c91b96..06b86addc181 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_ktls.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_ktls.c
@@ -7,6 +7,7 @@
 #include "test_progs.h"
 
 #define MAX_TEST_NAME 80
+#define TCP_ULP 31
 
 static int tcp_server(int family)
 {