diff --git a/target/linux/generic-2.6/config-2.6.30 b/target/linux/generic-2.6/config-2.6.30
index 20af1c12c..63401d288 100644
--- a/target/linux/generic-2.6/config-2.6.30
+++ b/target/linux/generic-2.6/config-2.6.30
@@ -79,6 +79,7 @@ CONFIG_ARPD=y
 # CONFIG_ARTHUR is not set
 CONFIG_ASK_IP_FIB_HASH=y
 # CONFIG_ASUS_OLED is not set
+# CONFIG_ASYNC_TX_DMA is not set
 # CONFIG_AT24 is not set
 # CONFIG_AT76C50X_USB is not set
 # CONFIG_ATA_ACPI is not set
diff --git a/target/linux/generic-2.6/config-2.6.31 b/target/linux/generic-2.6/config-2.6.31
index f28c5b111..38d0ab111 100644
--- a/target/linux/generic-2.6/config-2.6.31
+++ b/target/linux/generic-2.6/config-2.6.31
@@ -86,6 +86,7 @@ CONFIG_ARPD=y
 # CONFIG_ARTHUR is not set
 CONFIG_ASK_IP_FIB_HASH=y
 # CONFIG_ASUS_OLED is not set
+# CONFIG_ASYNC_TX_DMA is not set
 # CONFIG_AT24 is not set
 # CONFIG_AT76C50X_USB is not set
 # CONFIG_ATA is not set