diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
index b67e8022d500..a017d6b2f1dd 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
@@ -19,7 +19,7 @@ struct {
 int count = 0;
 int noise = 0;
 
-__always_inline int subprog_noise(void)
+static __always_inline int subprog_noise(void)
 {
 	__u32 key = 0;