diff --git a/bintree.c b/bintree.c
index 5fe4a54..6c6c03d 100644
--- a/bintree.c
+++ b/bintree.c
@@ -56,6 +56,7 @@ TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType
         {
             return newNode;
         }
+        // dosn't consider is Duplicate != Null upon root Null
         else
         {
             return currentNode;
@@ -140,7 +141,7 @@ void clearNode(TreeNode *node)
     // printf("left & right = Null\n");
     printf("node = %u\n", &node);
     // printf("node = %u\n", _ADDRESSOF(node));
-    // free(node);
+    free(node);
     // printf("node = %d\n", node);
     node        = NULL;
     printf("node = %u\n", &node);
diff --git a/bintree.o b/bintree.o
index 640ce65..a7303bb 100644
Binary files a/bintree.o and b/bintree.o differ
diff --git a/runbintreeTests.exe b/runbintreeTests.exe
index 740be06..c9a5f87 100644
Binary files a/runbintreeTests.exe and b/runbintreeTests.exe differ