diff --git a/android/android-jni/Makefile b/android/android-jni/Makefile
index 8cccd68e2..db1c2a2eb 100644
--- a/android/android-jni/Makefile
+++ b/android/android-jni/Makefile
@@ -1,7 +1,7 @@
 # The path to the NDK, requires crystax version r-4 for now, due to support
-#for the standard library
+# for the standard library
 
-#load environment from local make file
+# load environment from local make file
 LOCAL_ENV_MK=local.env.mk
 ifneq "$(wildcard $(LOCAL_ENV_MK))" ""
 include $(LOCAL_ENV_MK)
@@ -9,8 +9,7 @@ else
 $(shell cp sample.$(LOCAL_ENV_MK) $(LOCAL_ENV_MK))
 $(info ERROR local environement not setup! try:)
 $(info gedit $(LOCAL_ENV_MK))
-$(info Please setup the $(LOCAL_ENV_MK) - the default was just created')
-include $(LOCAL_ENV_MK)
+$(error Please setup the $(LOCAL_ENV_MK) - the default was just created')
 endif
 
 ANDROID_NDK_BASE = $(ANDROID_NDK_ROOT)
diff --git a/android/android-jni/jni/Calibration.cpp b/android/android-jni/jni/Calibration.cpp
index c9df5ee2e..c3e95fecc 100644
--- a/android/android-jni/jni/Calibration.cpp
+++ b/android/android-jni/jni/Calibration.cpp
@@ -69,7 +69,7 @@ bool runCalibration(vector<vector<Point2f> > imagePoints,
 	if (flags & CV_CALIB_FIX_ASPECT_RATIO)
 		cameraMatrix.at<double> (0, 0) = aspectRatio;
 
-	distCoeffs = Mat::zeros(5, 1, CV_64F);
+	distCoeffs = Mat::zeros(4, 1, CV_64F);
 
 	vector<vector<Point3f> > objectPoints(1);
 	calcChessboardCorners(boardSize, squareSize, objectPoints[0]);
diff --git a/android/android-jni/project_create.sh b/android/android-jni/project_create.sh
new file mode 100755
index 000000000..0a1b6bd30
--- /dev/null
+++ b/android/android-jni/project_create.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+#this generates an ant based cli build of the android-jni project
+android update project --name android-opencv \
+--path .