diff --git a/BF/BloomFilter.h b/BF/BloomFilter.h
index d3faec9..bc4ef76 100644
--- a/BF/BloomFilter.h
+++ b/BF/BloomFilter.h
@@ -20,7 +20,7 @@ class BloomFilter {
     void add_tag(uint8_t *key) {
         for (int i = 0; i < num_of_hashes; ++i) {
             long index = SpookyHash::Hash64(key, key_len, i) % num_of_bits;
-            bits.flip(index);
+            bits.set(index);
         }
     }
 
diff --git a/README.md b/README.md
index 422027a..72d8a99 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ All the above executable files can be executed without extra parameters.
 ## Feedback
 
 - [Submit an issue](https://github.com/MonashCybersecurityLab/Aura/issues/new)
+
 - Email the authors: shifeng.sun@monash.edu, shangqi.lai@monash.edu, xingliang.yuan@monash.edu