diff --git a/Android.mk b/Android.mk
index 3f9b2e1..cc76926 100644
--- a/Android.mk
+++ b/Android.mk
@@ -347,6 +347,7 @@
 
 LOCAL_C_INCLUDES := \
     $(LOCAL_PATH)/android \
+    external/zlib \
     $(LOCAL_PATH)/src
 
 LOCAL_STATIC_LIBRARIES += libz