diff --git a/swad_changelog.h b/swad_changelog.h
index 3e80288c..a78b8fea 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -156,13 +156,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.54.11 (2016-11-13)"
+#define Log_PLATFORM_VERSION	"SWAD 16.54.12 (2016-11-13)"
 #define CSS_FILE		"swad16.51.css"
 #define JS_FILE			"swad16.46.1.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*.h sql/swad*.sql | tail -1
 /*
+        Version 16.54.12: Nov 13, 2016	Contextual help on countries. (206805 lines)
         Version 16.54.11: Nov 13, 2016	Contextual help on my webs / social networks. (206799 lines)
         Version 16.54.10: Nov 13, 2016	Contextual help on my institution, centre and department. (206795 lines)
         Version 16.54.9:  Nov 13, 2016	Contextual help on record card. (206789 lines)
diff --git a/swad_country.c b/swad_country.c
index 72d8d077..2b8414d6 100644
--- a/swad_country.c
+++ b/swad_country.c
@@ -500,6 +500,7 @@ void Cty_ListCountries1 (void)
 
 void Cty_ListCountries2 (void)
   {
+   extern const char *Hlp_SYSTEM_Countries;
    extern const char *Txt_Countries;
    extern const char *Txt_COUNTRIES_HELP_ORDER[2];
    extern const char *Txt_COUNTRIES_ORDER[2];
@@ -516,7 +517,8 @@ void Cty_ListCountries2 (void)
    const char *BgColor;
 
    /***** Table head *****/
-   Lay_StartRoundFrame (NULL,Txt_Countries,Cty_PutIconsListCountries,NULL);
+   Lay_StartRoundFrame (NULL,Txt_Countries,
+                        Cty_PutIconsListCountries,Hlp_SYSTEM_Countries);
    fprintf (Gbl.F.Out,"<table class=\"FRAME_TABLE CELLS_PAD_2\">"
                       "<tr>");
    for (Order = Cty_ORDER_BY_COUNTRY;
diff --git a/swad_help.c b/swad_help.c
index 0eceab1f..891f5565 100644
--- a/swad_help.c
+++ b/swad_help.c
@@ -37,6 +37,11 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
+/***** SYSTEM tab *****/
+
+const char *Hlp_SYSTEM_Countries =
+   "https://github.com/acanas/swad-core/wiki/SYSTEM.Countries";
+
 /***** STATS tab *****/
 
 const char *Hlp_STATS_Surveys =