diff --git a/app/boards/arm/bdn9/bdn9_rev2_defconfig b/app/boards/arm/bdn9/bdn9_rev2_defconfig
index 139cf853..91f54eb4 100644
--- a/app/boards/arm/bdn9/bdn9_rev2_defconfig
+++ b/app/boards/arm/bdn9/bdn9_rev2_defconfig
@@ -11,6 +11,9 @@ CONFIG_FPU=y
 # enable GPIO
 CONFIG_GPIO=y
 
+# Enable pinmux
+CONFIG_PINMUX=y
+
 # Needed to reduce this to size that will fit on F072
 CONFIG_HEAP_MEM_POOL_SIZE=1024