diff --git a/app/views/slides/grillrb/_intro.haml b/app/views/slides/grillrb/_intro.haml
index 05b5d28..0f9a6b5 100644
--- a/app/views/slides/grillrb/_intro.haml
+++ b/app/views/slides/grillrb/_intro.haml
@@ -14,19 +14,19 @@
 %section#finland
   %h2 from Finland
   %p
-    %img{:alt => "Finland", "data-src" => image_url("slides/grillrb/finland")}/
+    %img{:alt => "Finland", "data-src" => image_url("slides/grillrb/finland.jpg")}/
 %section#raisa
   %h2
     Raisa
     %small (my wife)
   %p
-    %img{:alt => "Raisa", "data-src" => image_url("slides/grillrb/raisa") , height: 400}/
+    %img{:alt => "Raisa", "data-src" => image_url("slides/grillrb/raisa.jpg") , height: 400}/
 %section#villataika
   %h2
     Run a b&b
     %small villataika.fi
   %p
-    %img{:alt => "Villa Taika", "data-src" => image_url("slides/grillrb/villataika") , height: 400}/
+    %img{:alt => "Villa Taika", "data-src" => image_url("slides/grillrb/villataika.jpg") , height: 400}/
 %section#intro2
   %h2 RubyX
   %p Compile ruby to binary in ruby