diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index bf800f8cb3e4..495d5a5d0373 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -546,7 +546,7 @@ static ssize_t verify_hdr(struct ib_uverbs_cmd_hdr *hdr,
 	if (hdr->in_words * 4 != count)
 		return -EINVAL;
 
-	if (count < method_elm->req_size + sizeof(hdr)) {
+	if (count < method_elm->req_size + sizeof(*hdr)) {
 		/*
 		 * rdma-core v18 and v19 have a bug where they send DESTROY_CQ
 		 * with a 16 byte write instead of 24. Old kernels didn't