diff --git a/library/src/main/java/com/andexert/expandablelayout/library/ExpandableLayout.java b/library/src/main/java/com/andexert/expandablelayout/library/ExpandableLayout.java
index f1a85ab..14c22e6 100644
--- a/library/src/main/java/com/andexert/expandablelayout/library/ExpandableLayout.java
+++ b/library/src/main/java/com/andexert/expandablelayout/library/ExpandableLayout.java
@@ -80,7 +80,7 @@ private void init(final Context context, AttributeSet attrs)
         headerView.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
         headerLayout.addView(headerView);
         final View contentView = View.inflate(context, contentID, null);
-        contentView.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
+        contentView.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
         contentLayout.addView(contentView);
         contentLayout.setVisibility(GONE);
         headerLayout.setOnClickListener(new OnClickListener()