diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index 3c03de74dbfce9a90211cd45d37415e5495963d8..abfe75b686015a619664ba9b74549fa9037b8c72 100644
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -117,7 +117,7 @@ static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
 		else
 			ret = sdio_memcpy_fromio(func, buf, addr, len);
 
-		wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %d bytes",
+		wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
 			     addr, len);
 		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
 	}
@@ -138,7 +138,7 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
 		wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
 			     addr, ((u8 *)buf)[0]);
 	} else {
-		wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %d bytes",
+		wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
 			     addr, len);
 		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);