diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
index 35ceacd..1a5bdd1 100644
--- a/include/configs/mx31pdk.h
+++ b/include/configs/mx31pdk.h
@@ -61,6 +61,7 @@
 #define CONFIG_MXC_UART
 #define CONFIG_SYS_MX31_UART1
 #define CONFIG_HW_WATCHDOG
+#define CONFIG_MXC_GPIO
 
 #define CONFIG_HARD_SPI
 #define CONFIG_MXC_SPI