diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index 1ccab42a718..f739abd1750 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -577,6 +577,7 @@ Before=Before
 After=After
 IPAddress=IP address
 Frequency=Frequency
+IM=Instant messaging
 # Week day
 Day1=Monday
 Day2=Tuesday
diff --git a/htdocs/langs/fr_FR/main.lang b/htdocs/langs/fr_FR/main.lang
index 91f77200e4d..45cfc08b31c 100644
--- a/htdocs/langs/fr_FR/main.lang
+++ b/htdocs/langs/fr_FR/main.lang
@@ -577,6 +577,7 @@ Before=Avant
 After=Après
 IPAddress=Adresse IP
 Frequency=Fréquence
+IM=Messagerie instantannée
 # Week day
 Day1=Lundi
 Day2=Mardi