diff --git a/configs/colibri_pxa270_defconfig b/configs/colibri_pxa270_defconfig
index 9a57041..85740c2 100644
--- a/configs/colibri_pxa270_defconfig
+++ b/configs/colibri_pxa270_defconfig
@@ -13,6 +13,7 @@
 CONFIG_CMD_PING=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
+CONFIG_PXA_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/h2200_defconfig b/configs/h2200_defconfig
index c1b359e..a47159a 100644
--- a/configs/h2200_defconfig
+++ b/configs/h2200_defconfig
@@ -24,3 +24,4 @@
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_PING=y
 # CONFIG_CMD_MISC is not set
+CONFIG_PXA_SERIAL=y
diff --git a/configs/zipitz2_defconfig b/configs/zipitz2_defconfig
index 8eb9be4..5846579 100644
--- a/configs/zipitz2_defconfig
+++ b/configs/zipitz2_defconfig
@@ -14,6 +14,7 @@
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
+CONFIG_PXA_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_LCD=y