diff --git a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragButton.java b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragButton.java
index 6f67334b..f01e1ab4 100644
--- a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragButton.java
+++ b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragButton.java
@@ -26,11 +26,6 @@ public class DirectionDragButton extends DragButton implements DirectionDragView
         init(attrs);
     }
 
-    public DirectionDragButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-        init(attrs);
-    }
-
     private void init(@Nullable AttributeSet attrs) {
         textView.init(this, attrs);
     }
diff --git a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragImageButton.java b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragImageButton.java
index 39694780..4a59e7f3 100644
--- a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragImageButton.java
+++ b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DirectionDragImageButton.java
@@ -26,11 +26,6 @@ public class DirectionDragImageButton extends DragImageButton implements Directi
         init(attrs);
     }
 
-    public DirectionDragImageButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-        init(attrs);
-    }
-
     private void init(@Nullable AttributeSet attrs) {
         final TextView view = new TextView(getContext(), attrs);
         textView.init(this, attrs, view.getPaint());
diff --git a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragButton.java b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragButton.java
index ddb7e828..18057c20 100644
--- a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragButton.java
+++ b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragButton.java
@@ -1,15 +1,13 @@
 package org.solovyev.android.views.dragbutton;
 
-import android.annotation.TargetApi;
 import android.content.Context;
-import android.os.Build;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v7.widget.AppCompatButton;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
-import android.widget.Button;
 
-public abstract class DragButton extends Button implements DragView {
+public abstract class DragButton extends AppCompatButton implements DragView {
     @NonNull
     private final DragGestureDetector dragDetector = new DragGestureDetector(this);
 
@@ -25,11 +23,6 @@ public abstract class DragButton extends Button implements DragView {
         super(context, attrs, defStyleAttr);
     }
 
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public DragButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-    }
-
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         if (dragDetector.onTouchEvent(event)) {
diff --git a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragImageButton.java b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragImageButton.java
index 95f6f7dd..dda0d6f2 100644
--- a/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragImageButton.java
+++ b/dragbutton/src/main/java/org/solovyev/android/views/dragbutton/DragImageButton.java
@@ -1,15 +1,13 @@
 package org.solovyev.android.views.dragbutton;
 
-import android.annotation.TargetApi;
 import android.content.Context;
-import android.os.Build;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v7.widget.AppCompatImageButton;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
-import android.widget.ImageButton;
 
-public abstract class DragImageButton extends ImageButton implements DragView {
+public abstract class DragImageButton extends AppCompatImageButton implements DragView {
     @NonNull
     private final DragGestureDetector dragDetector = new DragGestureDetector(this);
 
@@ -25,12 +23,6 @@ public abstract class DragImageButton extends ImageButton implements DragView {
         super(context, attrs, defStyleAttr);
     }
 
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public DragImageButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-    }
-
-
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         if (dragDetector.onTouchEvent(event)) {