diff --git a/bintree.c b/bintree.c
index 298466f..35e163c 100644
--- a/bintree.c
+++ b/bintree.c
@@ -86,8 +86,7 @@ void *nextTreeData(TreeNode *root)
             stack = push(stack,root);
         }
     }
-    return result->data;
-
+    return result;
 }
 
 
@@ -95,7 +94,12 @@ void *nextTreeData(TreeNode *root)
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
-
+   TreeNode* clear = nextTreeData(root);
+    while(clear != NULL){
+        free(clear->data);
+        free(clear);
+        clear = nextTreeData(NULL);
+    }
 }
 
 // Returns the number of entries in the tree given by root.