diff --git a/drivers/mmcsd/mmcsd_sdio.c b/drivers/mmcsd/mmcsd_sdio.c
index 98583a91d79..3004bd962c0 100644
--- a/drivers/mmcsd/mmcsd_sdio.c
+++ b/drivers/mmcsd/mmcsd_sdio.c
@@ -68,7 +68,7 @@
 /* Timing (all in units of microseconds) */
 
 #define MMCSD_POWERUP_DELAY     ((useconds_t)250)    /* 74 clock cycles @ 400KHz = 185uS */
-#define MMCSD_IDLE_DELAY        ((useconds_t)50000)  /* Short delay to allow change to IDLE state */
+#define MMCSD_IDLE_DELAY        ((useconds_t)100000) /* Short delay to allow change to IDLE state */
 #define MMCSD_DSR_DELAY         ((useconds_t)100000) /* Time to wait after setting DSR */
 #define MMCSD_CLK_DELAY         ((useconds_t)5000)   /* Delay after changing clock speeds */