diff --git a/buildozer/build-instructions.txt b/buildozer/build-instructions.txt
index 8cf01dd9..03636f7a 100644
--- a/buildozer/build-instructions.txt
+++ b/buildozer/build-instructions.txt
@@ -40,7 +40,7 @@ setup, to reflect the local situation.
 Execution of buildozer needs some time. You
 will have to accept a lizense from google.
 
-$> buildozer android debug
+$> ./buildozer.run
 
 Finally if all worked fine, the apk file is found in
 directory ./bin/.
@@ -52,7 +52,7 @@ to get better information on what to do.
 Make a release Version:
 -----------------------
 
-$> buildozer android release
+$> ./buildozer.run release
 
 Without signing information the result apk is a
 'release-unsigned' that can be signed afterwards
diff --git a/buildozer/buildozer.init b/buildozer/buildozer.init
index 9ee45a3d..d9f169a5 100755
--- a/buildozer/buildozer.init
+++ b/buildozer/buildozer.init
@@ -37,8 +37,4 @@ echo '### eval version'
 
 ./version.py > ${tmpdir}/version.txt
 
-echo '### add more java heap space for gradle'
-
-# export GRADLE_OPTS="-Xms1724m -Xmx5048m -Dorg.gradle.jvmargs='-Xms1724m -Xmx5048m'"
-
 echo '### end init'
diff --git a/buildozer/buildozer.run b/buildozer/buildozer.run
new file mode 100755
index 00000000..621a68a1
--- /dev/null
+++ b/buildozer/buildozer.run
@@ -0,0 +1,19 @@
+#!/bin/bash
+#set -eux
+
+echo '### prepare jvm heap for gradle'
+
+export GRADLE_OPTS="-Xms1724m -Xmx5048m -Dorg.gradle.jvmargs='-Xms1724m -Xmx5048m'"
+
+echo '### run buildozer'
+
+if [ "$1" ]
+then
+	echo '### ... release'
+	buildozer android release
+else
+	echo '### ... debug'
+	buildozer android debug
+fi
+
+echo '### end run'
diff --git a/buildozer/mkcards b/buildozer/mkcards
index ecdb98d4..0a9bf460 100755
--- a/buildozer/mkcards
+++ b/buildozer/mkcards
@@ -25,12 +25,4 @@ echo '### processing cardsets'
   done
 )
 
-echo '### remove big cardsets'
-{
-  cd ${cardsets_dir}
-  rm -rf cardset-louie-mantia-hanafuda
-  rm -rf cardset-neo-tarock
-  rm -rf cardset-neo-hex
-}
-
 echo '### end cardsets'