diff --git a/INSTALL b/INSTALL
index 18fc8e0d8..4dad40a59 100644
--- a/INSTALL
+++ b/INSTALL
@@ -2,9 +2,11 @@ WeeChat - Installation instructions
 ===================================
 
 1) Run './configure'
-   options: --disable-curses : do not build Curses interface
+   options: --enble-perl     : enable Perl scripts
+            --disable-curses : do not build Curses interface
             --enable-gtk     : build Gtk+ interface (under development!)
             --enable-qt      : build Qt interface (not developed!)
+            --with-debug     : 1 for debug compilation, 2 for debug messages
 
 2) Run 'make'
 
@@ -12,4 +14,4 @@ WeeChat - Installation instructions
 
 4) Enjoy !  :-)
 
-See AUTHORS for any support, feel free to contact us for any problem ;)
+See AUTHORS for support, feel free to contact us for any problem ;)
diff --git a/weechat/INSTALL b/weechat/INSTALL
index 18fc8e0d8..4dad40a59 100644
--- a/weechat/INSTALL
+++ b/weechat/INSTALL
@@ -2,9 +2,11 @@ WeeChat - Installation instructions
 ===================================
 
 1) Run './configure'
-   options: --disable-curses : do not build Curses interface
+   options: --enble-perl     : enable Perl scripts
+            --disable-curses : do not build Curses interface
             --enable-gtk     : build Gtk+ interface (under development!)
             --enable-qt      : build Qt interface (not developed!)
+            --with-debug     : 1 for debug compilation, 2 for debug messages
 
 2) Run 'make'
 
@@ -12,4 +14,4 @@ WeeChat - Installation instructions
 
 4) Enjoy !  :-)
 
-See AUTHORS for any support, feel free to contact us for any problem ;)
+See AUTHORS for support, feel free to contact us for any problem ;)