diff --git a/subsys/sd/sdmmc.c b/subsys/sd/sdmmc.c
index 5cf029db79c..d52b3394fe3 100644
--- a/subsys/sd/sdmmc.c
+++ b/subsys/sd/sdmmc.c
@@ -1172,7 +1172,7 @@ static int sdmmc_read_status(struct sd_card *card)
 /* Waits for SD card to be ready for data. Returns 0 if card is ready */
 static int sdmmc_wait_ready(struct sd_card *card)
 {
-	int ret, timeout = CONFIG_SD_DATA_TIMEOUT;
+	int ret, timeout = CONFIG_SD_DATA_TIMEOUT * 1000;
 	bool busy = true;
 
 	do {