diff --git a/pico/Android.mk b/pico/Android.mk
index 91ce83b..2f6420e 100755
--- a/pico/Android.mk
+++ b/pico/Android.mk
@@ -1,11 +1,14 @@
 # SVOX Pico TTS Engine
 # This makefile builds both an activity and a shared library.
 
+#disable build in PDK
+ifneq ($(TARGET_BUILD_PDK),true)
+
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
 LOCAL_PACKAGE_NAME := PicoTts
-	
+
 LOCAL_SRC_FILES := \
     $(call all-java-files-under, src) \
     $(call all-java-files-under, compat)
@@ -19,3 +22,5 @@
 include $(LOCAL_PATH)/compat/jni/Android.mk \
     $(LOCAL_PATH)/lib/Android.mk \
     $(LOCAL_PATH)/tts/Android.mk
+
+endif #TARGET_BUILD_PDK