diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.org/netom/haskell-postal.svg?branch=master)](https://travis-ci.org/netom/haskell-postal)
+
 # haskell-postal
 
 Haskell binding for the libpostal library
diff --git a/haskell-postal.cabal b/haskell-postal.cabal
--- a/haskell-postal.cabal
+++ b/haskell-postal.cabal
@@ -1,5 +1,5 @@
 name:                haskell-postal
-version:             0.2.1.0
+version:             0.2.1.1
 synopsis:            Haskell binding for the libpostal library
 description:         Provides an interface for the libpostal NLP library
 homepage:            https://github.com/netom/haskell-postal#readme
diff --git a/src/NLP/Postal.hs b/src/NLP/Postal.hs
--- a/src/NLP/Postal.hs
+++ b/src/NLP/Postal.hs
@@ -140,7 +140,7 @@
 
         where
             castedOptions = castPtr options
-            bsAddress = TE.encodeUtf8 address
+            bsAddress = TE.encodeUtf8 address <> "\0"
 
 -- |Returns the expansion of an address
 -- Calls libpostal_expand_address() to normalize an address and return the list
@@ -169,7 +169,7 @@
     return result
 
     where
-        bsAddress = TE.encodeUtf8 address
+        bsAddress = TE.encodeUtf8 address <> "\0"
         cOptions = castPtr options
 
 -- |Calls libpostal_teardown_parser()