diff --git a/bintree.c b/bintree.c
index 5cf82a9..3933958 100644
--- a/bintree.c
+++ b/bintree.c
@@ -26,7 +26,18 @@ void *nextTreeData(TreeNode *root)
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
-
+    if(root->right)
+        clearTree(root->right);
+    else if (root->left)
+        clearTree(root->left);
+    else
+    {
+        root->data = 0;
+        free(root->data);
+        free(root->right);
+        free(root->left);
+        free(root);
+    } 
 }
 
 // Returns the number of entries in the tree given by root.