diff --git a/app/build.gradle b/app/build.gradle
index ce56baa..c05f792 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -101,7 +101,7 @@ dependencies {
         transitive = true
     }
     implementation 'com.github.angads25:filepicker:1.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.1'
 
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.mockito:mockito-core:2.15.0'
diff --git a/app/src/main/java/ch/dissem/apps/abit/SettingsFragment.kt b/app/src/main/java/ch/dissem/apps/abit/SettingsFragment.kt
index da61c5d..3845f8f 100644
--- a/app/src/main/java/ch/dissem/apps/abit/SettingsFragment.kt
+++ b/app/src/main/java/ch/dissem/apps/abit/SettingsFragment.kt
@@ -262,10 +262,11 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
         }
 
     private fun connectivityChangeListener() =
-        OnPreferenceChangeListener { preference, newValue ->
-            val ctx = context
-            if (ctx != null && Build.VERSION.SDK_INT >= LOLLIPOP && Preferences.isFullNodeActive(ctx)) {
-                NetworkUtils.scheduleNodeStart(ctx)
+        OnPreferenceChangeListener { _, _ ->
+            context?.let { ctx ->
+                if (Build.VERSION.SDK_INT >= LOLLIPOP && Preferences.isFullNodeActive(ctx)) {
+                    NetworkUtils.scheduleNodeStart(ctx)
+                }
             }
             true
         }
diff --git a/build.gradle b/build.gradle
index 86e3333..dd57b70 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,10 +19,10 @@ allprojects {
     apply plugin: 'com.github.ben-manes.versions'
 
     repositories {
+        google()
         jcenter()
         mavenCentral()
         maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
         maven { url "https://jitpack.io" }
-        google()
     }
 }