diff --git a/project.properties b/project.properties
index a5578ba..fa36ac7 100644
--- a/project.properties
+++ b/project.properties
@@ -9,3 +9,4 @@
 
 # Project target.
 target=android-19
+android.library.reference.1=../OpenCV-2.4.9-android-sdk/sdk/java