diff --git a/bootrom/sdboot/sd.c b/bootrom/sdboot/sd.c
index c6f724b..97cd82d 100644
--- a/bootrom/sdboot/sd.c
+++ b/bootrom/sdboot/sd.c
@@ -12,7 +12,7 @@
 
 #define PAYLOAD_SIZE	(16 << 11)
 
-#define F_CLK 50000000UL
+#define F_CLK 60000000UL
 
 static volatile uint32_t * const spi = (void *)(SPI_CTRL_ADDR);