diff --git a/example/build.gradle b/example/build.gradle
index b8a8b32..a19d12b 100644
--- a/example/build.gradle
+++ b/example/build.gradle
@@ -3,7 +3,6 @@ apply plugin: 'com.android.application'
 android {
 
     compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     defaultConfig {
         applicationId "com.felhr.serialportexample"
diff --git a/examplesync/build.gradle b/examplesync/build.gradle
index f811d36..33d2c7c 100644
--- a/examplesync/build.gradle
+++ b/examplesync/build.gradle
@@ -3,7 +3,6 @@ apply plugin: 'com.android.application'
 android {
 
     compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     defaultConfig {
         applicationId "com.felhr.serialportexamplesync"
diff --git a/gradle.properties b/gradle.properties
index 7837fbb..51250a6 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,5 @@
 VERSION_NAME=1.0
 VERSION_CODE=1
-
 ANDROID_BUILD_MIN_SDK_VERSION=12
 ANDROID_BUILD_TARGET_SDK_VERSION=23
 ANDROID_BUILD_SDK_VERSION=23
-ANDROID_BUILD_TOOLS_VERSION=23.0.2
\ No newline at end of file
diff --git a/usbserial/build.gradle b/usbserial/build.gradle
index f246363..29a0b55 100644
--- a/usbserial/build.gradle
+++ b/usbserial/build.gradle
@@ -6,7 +6,6 @@ android {
     version = '1.0.0'
 
     compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     compileOptions {
         encoding "UTF-8"
@@ -20,12 +19,12 @@ android {
     }
 
     //noinspection GroovyAssignabilityCheck
-    task deleteJar(type: org.gradle.api.tasks.Delete){
+    task deleteJar(type: org.gradle.api.tasks.Delete) {
         delete 'eclipse_lib/usbserial.jar'
     }
 
     //noinspection GroovyAssignabilityCheck
-    task createJar(type: org.gradle.api.tasks.Copy){
+    task createJar(type: org.gradle.api.tasks.Copy) {
         from('build/intermediates/bundles/release/')
         into('eclipse_lib/')
         include('classes.jar')