diff --git a/Howtonfdump.md b/Howtonfdump.md
index d032bc11..233530bb 100644
--- a/Howtonfdump.md
+++ b/Howtonfdump.md
@@ -119,6 +119,16 @@ On installe NfSen **et** nfdump à partir des sources :
 ~~~
 # perl -MCPAN -e 'install Socket6'
 
+# wget https://github.com/phaag/nfdump/archive/v1.6.17.tar.gz
+# tar zxvf v1.6.17.tar.gz
+# cd nfdump-1.6.17
+# echo 'AC_CONFIG_MACRO_DIRS([m4])' >> configure.ac
+# apt install libcurl4-gnutls-dev libboost-regex-dev libboost-filesystem-dev libboost-system-dev libbz2-1.0 libbz2-dev libbz2-ocaml libbz2-ocaml-dev byacc
+# ./autogen.sh
+# ./configure --enable-nfprofile --enable-nftrack --enable-influxdb
+# make
+# make install
+
 $ wget https://sourceforge.net/projects/nfdump/files/stable/nfdump-1.6.13/nfdump-1.6.13.tar.gz/download -O nfdump-1.6.13.tar.gz
 $ tar zxvf nfdump-1.6.13.tar.gz
 $ cd nfdump-1.6.13
@@ -165,4 +175,21 @@ Checking BGP database for new version.
 Loading AS database.
 Updating records.
 Processed 66706 flows in 8 secs.
+~~~
+
+### Nfdump ne fonctionne plus après upgrade
+
+Un message d'erreur est obtenu lors du lancement d'une commande nfdump :
+
+~~~
+# nfdump -V
+nfdump: error while loading shared libraries: "libnfdump-1.6.17.so": cannot open shared object file: No such file or directory
+~~~
+
+Il faut lancer `ldconfig` pour refaire le lien symbolique entre libnfdump.so et libnfdump-1.6.17.so :
+
+~~~
+# ldconfig
+# nfdump -V
+nfdump: Version: 1.6.17
 ~~~
\ No newline at end of file