diff --git a/board/compulab/cm_t3517/mux.c b/board/compulab/cm_t3517/mux.c
index 88ce2cc..f31f19e 100644
--- a/board/compulab/cm_t3517/mux.c
+++ b/board/compulab/cm_t3517/mux.c
@@ -121,12 +121,12 @@ void set_muxconf_regs(void)
 	MUX_VAL(CP(UART2_RX),		(IEN  | PTD | EN  | M4)); /*GPIO_147*/
 
 	/* MMC1 */
-	MUX_VAL(CP(MMC1_CLK),		(IDIS | PTU | EN  | M0));
-	MUX_VAL(CP(MMC1_CMD),		(IEN  | PTU | EN  | M0));
-	MUX_VAL(CP(MMC1_DAT0),		(IEN  | PTU | EN  | M0));
-	MUX_VAL(CP(MMC1_DAT1),		(IEN  | PTU | EN  | M0));
-	MUX_VAL(CP(MMC1_DAT2),		(IEN  | PTU | EN  | M0));
-	MUX_VAL(CP(MMC1_DAT3),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_CLK),		(IEN  | PTU | EN  | M0));
+	MUX_VAL(CP(MMC1_CMD),		(IEN  | PTU | DIS  | M0));
+	MUX_VAL(CP(MMC1_DAT0),		(IEN  | PTU | DIS  | M0));
+	MUX_VAL(CP(MMC1_DAT1),		(IEN  | PTU | DIS  | M0));
+	MUX_VAL(CP(MMC1_DAT2),		(IEN  | PTU | DIS  | M0));
+	MUX_VAL(CP(MMC1_DAT3),		(IEN  | PTU | DIS  | M0));
 
 	/* DSS */
 	MUX_VAL(CP(DSS_PCLK),		(IDIS | PTD | DIS | M0));