diff --git a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
index 710e2ef..ffe7625 100644
--- a/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
+++ b/arch/arm/boot/dts/sun4i-a10-cubieboard.dts
@@ -73,7 +73,7 @@
 		green {
 			label = "cubieboard:green:usr";
 			gpios = <&pio 7 20 GPIO_ACTIVE_HIGH>; /* LED2 */
-			linux,default-trigger = "heartbeat";
+			linux,default-trigger = "mmc0";
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index 8da939a..934655f 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -85,6 +85,7 @@
 		green {
 			label = "cubietruck:green:usr";
 			gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc0";
 		};
 	};