diff --git a/bintree.c b/bintree.c
index 3c34c42..6cf26f9 100644
--- a/bintree.c
+++ b/bintree.c
@@ -50,9 +50,7 @@ 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");
-    //printf("curdat = %d\n", currentNode->data);
-    //printf("newdat = %d\n", newNode->data);
+    printf("entered addRec\n");
     if (currentNode == NULL)
     {
         printf("currentNode == NULL\n");
@@ -63,17 +61,17 @@ TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType
         
         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");
diff --git a/bintree.o b/bintree.o
index f472e9e..e53f36e 100644
Binary files a/bintree.o and b/bintree.o differ
diff --git a/bintreeTests.c b/bintreeTests.c
index 6aa1c01..24f2c1e 100644
--- a/bintreeTests.c
+++ b/bintreeTests.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 #include "unity.h"
 #include "bintree.h"
 
@@ -17,10 +18,13 @@ void tearDown(void) {
 static int compareIntEntries(const void *arg1, const void *arg2)
 {
     // printf("in comp\n");
-    const int *entry1 = (const int *)arg1;
-    const int *entry2 = (const int *)arg2;
+    const int *entry1 = (const void *)arg1;
+    const int *entry2 = (const void *)arg2;
+
     // printf("const set\n");
-    int result = entry2 - entry1;
+    int result = *entry2 - *entry1;
+
+    // int result = entry2 - entry1;
 
     // printf("exit comp\n");
     return result;
@@ -45,18 +49,25 @@ void test_addToTreeExpandsTreeCorrectly(void)
 
     testRoot = addToTree(testRoot, &score1, sizeof(int), compareIntEntries, NULL);
     printf("add1passed\n");
+    
     testRoot = addToTree(testRoot, &score2, sizeof(int), compareIntEntries, NULL);
     printf("add2passed\n");
+    
     testRoot = addToTree(testRoot, &score3, sizeof(int), compareIntEntries, NULL);
     printf("add3passed\n");
+    
     testRoot = addToTree(testRoot, &score4, sizeof(int), compareIntEntries, NULL);
     printf("add4passed\n");
+    
     testRoot = addToTree(testRoot, &score5, sizeof(int), compareIntEntries, NULL);
     printf("add5passed\n");
+    
     testRoot = addToTree(testRoot, &score6, sizeof(int), compareIntEntries, NULL);
     printf("add6passed\n");
+    /*
     testRoot = addToTree(testRoot, &score7, sizeof(int), compareIntEntries, NULL);
     printf("add7passed\n");
+    */
 
     // Checking the Tree without Doubles
     TEST_ASSERT_NOT_NULL(testRoot);
@@ -70,7 +81,7 @@ void test_addToTreeExpandsTreeCorrectly(void)
     TEST_ASSERT_NOT_NULL(testRoot->right);
     TEST_ASSERT_EQUAL_UINT16(score3, testRoot->right->data);
     printf("node3passed\n");
-
+    
     TEST_ASSERT_NOT_NULL(testRoot->left->left);
     TEST_ASSERT_EQUAL_UINT16(score4, testRoot->left->left->data);
     printf("node4passed\n");
@@ -78,7 +89,7 @@ void test_addToTreeExpandsTreeCorrectly(void)
     TEST_ASSERT_NOT_NULL(testRoot->left->right);
     TEST_ASSERT_EQUAL_UINT16(score5, testRoot->left->right->data);
     printf("node5passed\n");
-    /*
+    
     TEST_ASSERT_NOT_NULL(testRoot->right->left);
     TEST_ASSERT_EQUAL_UINT16(score6, testRoot->right->left->data);
     printf("node6passed\n");