diff --git a/.gitignore b/.gitignore
index f2a91fa88..e05264673 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,7 @@
 org.eclipse.ltk.core.refactoring.prefs
 gen
 local.properties
-ecbuild
+antbuild
 astrid/bin
 astrid/src-combined
 release
diff --git a/api/ant.properties b/api/ant.properties
new file mode 100644
index 000000000..bab71f6cc
--- /dev/null
+++ b/api/ant.properties
@@ -0,0 +1,2 @@
+# output files and apk
+out.dir=antbuild
diff --git a/astrid/ant.properties b/astrid/ant.properties
index d2d0a6783..f2bab94ce 100644
--- a/astrid/ant.properties
+++ b/astrid/ant.properties
@@ -1,7 +1,7 @@
 # Astrid build properties
 
 # output files and apk
-out.dir=bin
+out.dir=antbuild
 
 # source directory must be underneath output directory
 # because we pull in from multiple source folders
diff --git a/facebook/facebook/ant.properties b/facebook/facebook/ant.properties
new file mode 100644
index 000000000..bab71f6cc
--- /dev/null
+++ b/facebook/facebook/ant.properties
@@ -0,0 +1,2 @@
+# output files and apk
+out.dir=antbuild
diff --git a/greendroid/GreenDroid/ant.properties b/greendroid/GreenDroid/ant.properties
new file mode 100644
index 000000000..bab71f6cc
--- /dev/null
+++ b/greendroid/GreenDroid/ant.properties
@@ -0,0 +1,2 @@
+# output files and apk
+out.dir=antbuild