diff --git a/liblinphone_tester/ant.properties b/liblinphone_tester/ant.properties
new file mode 100644
index 000000000..9c05ba1c8
--- /dev/null
+++ b/liblinphone_tester/ant.properties
@@ -0,0 +1 @@
+source.dir=src:../submodules/linphone/mediastreamer2/java/src