diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 50e87c1..450bd0b 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -405,7 +405,7 @@
 			return 0;
 		}
 
-		mdelay(1);
+		mdelay(10);
 	}
 
 	ERROR("CMD1 failed after %d retries\n", SEND_OP_COND_MAX_RETRIES);