diff --git a/hw3/src/main.c b/hw3/src/main.c
index afdcbe1..c361808 100644
--- a/hw3/src/main.c
+++ b/hw3/src/main.c
@@ -4,23 +4,13 @@
 int main(int argc, char const *argv[]) {
     sf_set_magic(0x0);
 
-        size_t sz_u = 200, sz_v = 150, sz_w = 50, sz_x = 150, sz_y = 200, sz_z = 250;
-	void *u = sf_malloc(sz_u);
-	/* void *v = */ sf_malloc(sz_v);
-	void *w = sf_malloc(sz_w);
-	/* void *x = */ sf_malloc(sz_x);
-	void *y = sf_malloc(sz_y);
-	/* void *z = */ sf_malloc(sz_z);
+        size_t sz_x = sizeof(int), sz_y = 10, sz_x1 = sizeof(int) * 20;
+	void *x = sf_malloc(sz_x);
+	/* void *y = */ sf_malloc(sz_y);
+	x = sf_realloc(x, sz_x1);
 
-	sf_free(u);
-	sf_free(w);
-	sf_free(y);
-
-    int i = 3;
-	sf_block *bp = sf_free_list_heads[i].body.links.next;
-    printf("Wrong first block in free list %d: (found=%p, exp=%p, u=%p, w=%p)\n",
-                     i, &bp->header, (char *)y - 8, (char *)u - 8, (char *)w - 8);
-    sf_show_heap();
+	// cr_assert_not_null(x, "x is NULL!");
+	// sf_block *bp = (sf_block *)((char *)x - 16);
 
 
     sf_show_heap();
diff --git a/hw3/src/sfmm.c b/hw3/src/sfmm.c
index f6b22d6..5e7ed4f 100644
--- a/hw3/src/sfmm.c
+++ b/hw3/src/sfmm.c
@@ -170,11 +170,11 @@ void *sf_realloc(void *pp, sf_size_t rsize)
     sf_size_t new_size = get_min_size(size);
     if (new_size >= size)
     {
-        sf_block *new = sf_malloc(rsize);
+        sf_block *new = (sf_block *)(((intptr_t)sf_malloc(rsize)) - 2 * sizeof(sf_header));
         if (new == NULL)
             return NULL;
         memcpy(new->body.payload, block->body.payload, size);
-        sf_free(block);
+        sf_free(pp);
         return new->body.payload;
     }
     else