diff --git a/README.md b/README.md
index ee3c04b..9b2c6ad 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ repositories {
 Module build.gradle
 ```java
 dependencies {
-  compile 'com.github.iammert:MaterialIntroView:1.4'
+  compile 'com.github.iammert:MaterialIntroView:1.5'
 }
 ```
 
diff --git a/materialintro/build.gradle b/materialintro/build.gradle
index 123d435..876f9ab 100644
--- a/materialintro/build.gradle
+++ b/materialintro/build.gradle
@@ -5,7 +5,7 @@ android {
     buildToolsVersion "23.0.2"
 
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 14
         targetSdkVersion 23
         versionCode 1
         versionName "1.0"
diff --git a/materialintro/src/main/java/co/mobiwise/materialintro/view/MaterialIntroView.java b/materialintro/src/main/java/co/mobiwise/materialintro/view/MaterialIntroView.java
index ccf2d4a..b64da2b 100644
--- a/materialintro/src/main/java/co/mobiwise/materialintro/view/MaterialIntroView.java
+++ b/materialintro/src/main/java/co/mobiwise/materialintro/view/MaterialIntroView.java
@@ -264,12 +264,20 @@ public void onGlobalLayout() {
                         setInfoLayout();
                     if(isDotViewEnabled)
                         setDotViewLayout();
-                    getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                    removeOnGlobalLayoutListener(MaterialIntroView.this, this);
                 }
             }
         });
 
+    }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+    public static void removeOnGlobalLayoutListener(View v, ViewTreeObserver.OnGlobalLayoutListener listener){
+        if (Build.VERSION.SDK_INT < 16) {
+            v.getViewTreeObserver().removeGlobalOnLayoutListener(listener);
+        } else {
+            v.getViewTreeObserver().removeOnGlobalLayoutListener(listener);
+        }
     }
 
     @Override
diff --git a/sample/build.gradle b/sample/build.gradle
index 650499e..f739875 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "co.mobiwise.sample"
-        minSdkVersion 16
+        minSdkVersion 14
         targetSdkVersion 23
         versionCode 1
         versionName "1.0"
@@ -24,6 +24,6 @@ dependencies {
     testCompile 'junit:junit:4.12'
     compile 'com.android.support:appcompat-v7:23.1.1'
     compile 'com.android.support:design:23.1.1'
-    //compile 'com.github.iammert:MaterialIntroView:a4b7947d19'
+    //compile 'com.github.iammert:MaterialIntroView:1.4'
     compile project(':materialintro')
 }
diff --git a/sample/src/main/java/co/mobiwise/sample/fragment/MainFragment.java b/sample/src/main/java/co/mobiwise/sample/fragment/MainFragment.java
index c954982..84af772 100644
--- a/sample/src/main/java/co/mobiwise/sample/fragment/MainFragment.java
+++ b/sample/src/main/java/co/mobiwise/sample/fragment/MainFragment.java
@@ -21,7 +21,6 @@
 public class MainFragment extends Fragment implements View.OnClickListener{
 
     private static final String INTRO_CARD = "material_intro";
-    private static final String INTRO_RESET_BUTTON = "material_reset";
 
     private CardView cardView;
     private Button button;