diff --git a/_data/ui-text.yml b/_data/ui-text.yml
index 99daed15..18867f13 100644
--- a/_data/ui-text.yml
+++ b/_data/ui-text.yml
@@ -27,6 +27,7 @@ en: &DEFAULT_EN
   website_label         : "Website"
   email_label           : "Email"
   recent_posts          : "Recent Posts"
+  undefined_wpm         : "Undefined parameter words_per_minute at _config.yml"   
 en-US:
   <<: *DEFAULT_EN
 en-UK:
@@ -59,6 +60,7 @@ es: &DEFAULT_ES
   website_label         : "Sitio web"
   email_label           : "Email"
   recent_posts          : "Entradas recientes"
+  undefined_wpm         : "Parametro words_per_minute (Palabras por minuto) no definido en _config.yml" 
 es-ES:
   <<: *DEFAULT_ES
 es-CO:
diff --git a/_includes/read-time.html b/_includes/read-time.html
index 86e7db84..b0dd0626 100644
--- a/_includes/read-time.html
+++ b/_includes/read-time.html
@@ -1,13 +1,19 @@
+
+
 {% if post.read_time %}
   {% assign words = post.content | strip_html | number_of_words %}
 {% elsif page.read_time %}
   {% assign words = page.content | strip_html | number_of_words %}
 {% endif %}
 
-{% if words < 180 %}
-  {{ site.data.ui-text[site.locale].less_than }} 1 {{ site.data.ui-text[site.locale].minute_read }}
-{% elsif words < 360 %}
-  1 {{ site.data.ui-text[site.locale].minute_read }}
+{% if site.words_per_minute %}
+  {% if words < 180 %}
+	  {{ site.data.ui-text[site.locale].less_than }} 1 {{ site.data.ui-text[site.locale].minute_read }}
+	{% elsif words < 360 %}
+	  1 {{ site.data.ui-text[site.locale].minute_read }}
+	{% else %}
+	  {{ words | divided_by:site.words_per_minute }} {{ site.data.ui-text[site.locale].minutes_read }}
+	{% endif %}
 {% else %}
-  {{ words | divided_by:site.words_per_minute }} {{ site.data.ui-text[site.locale].minutes_read }}
+  {{ site.data.ui-text[site.locale].undefined_words_per_minute }}
 {% endif %}
\ No newline at end of file