diff --git a/configs/bambino-200e/include/board.h b/configs/bambino-200e/include/board.h
index 7c4030a149..77430424a0 100644
--- a/configs/bambino-200e/include/board.h
+++ b/configs/bambino-200e/include/board.h
@@ -233,7 +233,7 @@
 #define BOARD_SDMMC_MAXFREQ      50000000
 #define BOARD_SDMMC_CEIL(a,b)    (((a) + (b) - 1) / (b))
 
-#define BOARD_SDMMC_CLKDIV       BOARD_SDMMC_CEIL(BOARD_MAIN_CLK, BOARD_SDMMC_MAXFREQ)
+#define BOARD_SDMMC_CLKDIV       (1)            /* No source clock divider */
 #define BOARD_SDMMC_FREQUENCY    (BOARD_MAIN_CLK / BOARD_SDMMC_CLKDIV)
 
 /* Mode-dependent function clock division