diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index d8394007bc99652a5142a5a9b8e75f939298ea26..5db38808178928abf1f5b5b4482c5c7c56f1eee1 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -59,8 +59,8 @@ static inline bool mmc_cqe_can_dcmd(struct mmc_host *host)
 	return host->caps2 & MMC_CAP2_CQE_DCMD;
 }
 
-enum mmc_issue_type mmc_cqe_issue_type(struct mmc_host *host,
-				       struct request *req)
+static enum mmc_issue_type mmc_cqe_issue_type(struct mmc_host *host,
+					      struct request *req)
 {
 	switch (req_op(req)) {
 	case REQ_OP_DRV_IN: