diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c b/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c
index d64ba7ddaed5..d7fb561ed4fb 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_task_vmas.c
@@ -52,7 +52,7 @@ SEC("iter/task_vma") int proc_maps(struct bpf_iter__task_vma *ctx)
 		bpf_d_path(&file->f_path, d_path_buf, D_PATH_BUF_SIZE);
 
 		BPF_SEQ_PRINTF(seq, "%08llx ", vma->vm_pgoff << 12);
-		BPF_SEQ_PRINTF(seq, "%02x:%02x %u", MAJOR(dev), MINOR(dev),
+		BPF_SEQ_PRINTF(seq, "%02x:%02x %llu", MAJOR(dev), MINOR(dev),
 			       file->f_inode->i_ino);
 		BPF_SEQ_PRINTF(seq, "\t%s\n", d_path_buf);
 	} else {