diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index ade9ac672adb..fa0833410ac1 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -15056,8 +15056,7 @@ static __init int prepare_tail_call_tests(struct bpf_array **pprogs)
 	int which, err;
 
 	/* Allocate the table of programs to be used for tall calls */
-	progs = kzalloc(sizeof(*progs) + (ntests + 1) * sizeof(progs->ptrs[0]),
-			GFP_KERNEL);
+	progs = kzalloc(struct_size(progs, ptrs, ntests + 1), GFP_KERNEL);
 	if (!progs)
 		goto out_nomem;