diff --git a/bintree.c b/bintree.c
index 6cf26f9..a7846be 100644
--- a/bintree.c
+++ b/bintree.c
@@ -51,27 +51,35 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFc
 TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType compareFct, int *isDuplicate)
 {
     printf("entered addRec\n");
-    if (currentNode == NULL)
+    if ((currentNode == NULL))
     {
         printf("currentNode == NULL\n");
-        if (isDuplicate != NULL)
+        if (isDuplicate == NULL)
         {
-            *isDuplicate = 0;
+            
+            return newNode;
+        }
+        //else if (isDuplicate != 1)
+        //{
+        //    *isDuplicate = 0;
+        //    return newNode;
+        //}
+        else
+        {
+            return currentNode;
         }
-        
-        return newNode;
     }
-    else if (compareFct(&currentNode->data, &newNode->data) < 0)
+    else if ((compareFct(&currentNode->data, &newNode->data) < 0))
     {
         printf("compareFct(currentNode->data, newNode->data) < 0\n");
         currentNode->left   = addToTreeRec(currentNode->left, newNode, compareFct, isDuplicate);
     }
-    else if (compareFct(&currentNode->data, &newNode->data) > 0)
+    else if ((compareFct(&currentNode->data, &newNode->data) > 0))
     {
         printf("compareFct(currentNode->data, newNode->data) > 0\n");
         currentNode->right  = addToTreeRec(currentNode->right, newNode, compareFct, isDuplicate);
     }
-    else if (compareFct(&currentNode->data, &newNode->data) == 0)
+    else if ((compareFct(&currentNode->data, &newNode->data) == 0))
     {
         //duplicate
         printf("duplicate\n");
@@ -81,6 +89,7 @@ TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType
         }
         else
         {
+            printf("setDuplicate\n");
             *isDuplicate = 1;
         }
     }
diff --git a/bintree.o b/bintree.o
index e53f36e..d193ca1 100644
Binary files a/bintree.o and b/bintree.o differ
diff --git a/bintreeTests.c b/bintreeTests.c
index f8b61ba..9f5d834 100644
--- a/bintreeTests.c
+++ b/bintreeTests.c
@@ -37,7 +37,7 @@ static int compareIntEntries(const void *arg1, const void *arg2)
 void test_addToTreeExpandsTreeCorrectly(void)
 {
     TreeNode    *testRoot       = NULL;
-    int         *testIsDouble   = 0;
+    int         testIsDouble    = 0;
     int         score1          = 12;
     int         score2          = 6;
     int         score3          = 18;
@@ -102,9 +102,10 @@ void test_addToTreeExpandsTreeCorrectly(void)
     testRoot = addToTree(testRoot, &score4, sizeof(int), compareIntEntries, NULL);
     TEST_ASSERT_NOT_NULL(testRoot->left->left->left);
     TEST_ASSERT_EQUAL_UINT16(score4, testRoot->left->left->left->data);
+    printf("double passed\n");
     
     // Trying to add Double while Doubles not Permitted
-    testRoot = addToTree(testRoot, &score7, sizeof(int), compareIntEntries, testIsDouble);
+    testRoot = addToTree(testRoot, &score7, sizeof(int), compareIntEntries, &testIsDouble);
     TEST_ASSERT_NULL(testRoot->right->right->left);
     TEST_ASSERT_EQUAL_UINT16(1, testIsDouble);