diff --git a/app/src/main/java/io/neoterm/backend/TerminalEmulator.java b/app/src/main/java/io/neoterm/backend/TerminalEmulator.java
index 4be95c7..ef2a9b7 100755
--- a/app/src/main/java/io/neoterm/backend/TerminalEmulator.java
+++ b/app/src/main/java/io/neoterm/backend/TerminalEmulator.java
@@ -403,8 +403,8 @@ public final class TerminalEmulator {
         } else {
             mouseButton = pressed ? mouseButton : 3; // 3 for release of all buttons.
             // Clip to screen, and clip to the limits of 8-bit data.
-            boolean out_of_bounds = column > 255 - 32 || row > 255 - 32;
-            if (!out_of_bounds) {
+            boolean outOfBounds = column > 255 - 32 || row > 255 - 32;
+            if (!outOfBounds) {
                 byte[] data = {'\033', '[', 'M', (byte) (32 + mouseButton), (byte) (32 + column), (byte) (32 + row)};
                 mSession.write(data, 0, data.length);
             }
diff --git a/app/src/main/java/io/neoterm/ui/term/tab/NeoTabDecorator.kt b/app/src/main/java/io/neoterm/ui/term/tab/NeoTabDecorator.kt
index 09adead..afc6637 100644
--- a/app/src/main/java/io/neoterm/ui/term/tab/NeoTabDecorator.kt
+++ b/app/src/main/java/io/neoterm/ui/term/tab/NeoTabDecorator.kt
@@ -72,7 +72,7 @@ class NeoTabDecorator(val context: NeoTermActivity) : TabSwitcherDecorator() {
             VIEW_TYPE_TERM -> {
                 val termTab = tab as TermTab
                 termTab.toolbar = toolbar
-                val terminalView = findViewById<TerminalView>(R.id.terminal_view)
+                val terminalView =  findViewById<TerminalView>(R.id.terminal_view)
                 if (isQuickPreview) {
                     bindTerminalView(termTab, terminalView, null)
                 } else {
diff --git a/build.gradle b/build.gradle
index 1149bfc..0f9371a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ buildscript {
     ext.android = [
             ANDROID_SUPPORT_VERSION: '27.0.2',
 
-            KOTLIN_VERSION         : '1.2.21',
+            KOTLIN_VERSION         : '1.2.30',
 
             MIN_SDK_VERSION        : 21,
 
diff --git a/chrome-tabs/build.gradle b/chrome-tabs/build.gradle
index e089c2a..e41b7bd 100755
--- a/chrome-tabs/build.gradle
+++ b/chrome-tabs/build.gradle
@@ -22,7 +22,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.michael-rapp:android-util:1.15.0'
+    compile 'com.github.michael-rapp:android-util:1.15.0'
     implementation rootProject.ext.deps["annotations"]
     implementation rootProject.ext.deps["appcompat-v7"]
     testImplementation rootProject.ext.deps["junit"]