diff --git a/README.centos b/README.centos
index 5c641298cd52aeed70c943e6adc7f3d4a87dadd9..ef81135cc9f9d0c4b0c06b9e7b3fbebf5269e2ad 100755
--- a/README.centos
+++ b/README.centos
@@ -6,7 +6,7 @@ centos6.4
 *antlr.jar*
 Belle sip needs antlr.jar to generate parser code. A prebuilt jar is available from the antlr git and should be manually install using the following command:
 
-        git clone -b linphone  git://git.linphone.org/antlr
+        git clone -b linphone  git://git.linphone.org/antlr3
         sudo mkdir /usr/local/share/java
         sudo cp  antlr3/antlr-3.4-complete.jar  /usr/local/share/java/antlr.jar
 
@@ -16,10 +16,12 @@ Belle sip uses libantlr3c version 3.2 or above. This dependency cannot be easely
 To manually build libantlr3c on a 64 bits system, checkout source code using:
 
         cd antlr3/runtime/C
-        ./configure --disable-shared --enable-64bit --with-pic
+        ./autogen.sh 
+	./configure --disable-shared --enable-64bit --with-pic
         make
-        make install
+        sudo make install
 
 Now, back to belle-sip
-
+	./autogen.sh 
+	./configure
         make rpm