diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index b38005003c..9ef99b67d5 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -74,10 +74,10 @@
 #define SDHC_CAPAB_MAXBLOCKLENGTH 512ul
 /* Maximum clock frequency for SDclock in MHz
  * value in range 10-63 MHz, 0 - not defined */
-#define SDHC_CAPAB_BASECLKFREQ    0ul
+#define SDHC_CAPAB_BASECLKFREQ    52ul
 #define SDHC_CAPAB_TOUNIT         1ul  /* Timeout clock unit 0 - kHz, 1 - MHz */
 /* Timeout clock frequency 1-63, 0 - not defined */
-#define SDHC_CAPAB_TOCLKFREQ      0ul
+#define SDHC_CAPAB_TOCLKFREQ      52ul
 
 /* Now check all parameters and calculate CAPABILITIES REGISTER value */
 #if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 ||     \