diff --git a/target/linux/ixp4xx-2.6/config/default b/target/linux/ixp4xx-2.6/config/default
index de04c9028b..095dbb8cb7 100644
--- a/target/linux/ixp4xx-2.6/config/default
+++ b/target/linux/ixp4xx-2.6/config/default
@@ -437,7 +437,7 @@ CONFIG_SENSORS_EEPROM=y
 # CONFIG_SENSORS_VT8231 is not set
 # CONFIG_SENSORS_W83627EHF is not set
 # CONFIG_SENSORS_W83627HF is not set
-# CONFIG_SENSORS_W83781D is not set
+CONFIG_SENSORS_W83781D=y
 # CONFIG_SENSORS_W83791D is not set
 # CONFIG_SENSORS_W83792D is not set
 # CONFIG_SENSORS_W83793 is not set