diff --git a/app/assets/images/quote-after-blue.png b/app/assets/images/quote_after_blue.png
similarity index 100%
rename from app/assets/images/quote-after-blue.png
rename to app/assets/images/quote_after_blue.png
diff --git a/app/assets/images/quote-after-white.png b/app/assets/images/quote_after_white.png
similarity index 100%
rename from app/assets/images/quote-after-white.png
rename to app/assets/images/quote_after_white.png
diff --git a/app/assets/images/quote-before-blue.png b/app/assets/images/quote_before_blue.png
similarity index 100%
rename from app/assets/images/quote-before-blue.png
rename to app/assets/images/quote_before_blue.png
diff --git a/app/assets/images/quote-before-white.png b/app/assets/images/quote_before_white.png
similarity index 100%
rename from app/assets/images/quote-before-white.png
rename to app/assets/images/quote_before_white.png
diff --git a/app/assets/stylesheets/icons.scss b/app/assets/stylesheets/icons.scss
index 5256b236e..bcfafc135 100644
--- a/app/assets/stylesheets/icons.scss
+++ b/app/assets/stylesheets/icons.scss
@@ -299,7 +299,7 @@
   display: block;
   width: 60px;
   height: 60px;
-  background-image: url(quote-before.svg);
+  background-image: url("quote_before_blue.png");
   background-repeat: no-repeat;
 }
 
@@ -309,17 +309,16 @@
   display: block;
   width: 60px;
   height: 60px;
-  background-image: url(quote-after.svg);
+  background-image: url("quote_after_blue.png");
   background-repeat: no-repeat;
 }
 
-
 .icon-finger::before {
   content: '';
   background-size: cover;
   display: inline-block;
   width: 50px;
   height: 50px;
-  background-image: url(finger.svg);
+  background-image: url("finger.png");
   background-repeat: no-repeat;
 }
diff --git a/app/views/dashboard/mailer/forward.html.erb b/app/views/dashboard/mailer/forward.html.erb
index f64019f85..3f6be1250 100644
--- a/app/views/dashboard/mailer/forward.html.erb
+++ b/app/views/dashboard/mailer/forward.html.erb
@@ -5,9 +5,9 @@
     <tbody>
       <tr>
         <td style="background: #0300ff; padding: 50px; padding-top:40px; text-align: left;">
-          <%= image_tag 'quote-before-white.png', style: 'max-width: 40px; vertical-align: top;' %>
+          <%= image_tag "quote_before_white.png", style: "max-width: 40px; vertical-align: top;" %>
           <h1 style="color: #fff; font-size: 60px; line-height: 90px; display: inline;"><%= @proposal.title %></h1>
-          <%= image_tag 'quote-after-white.png', style: 'max-width: 40px; vertical-align: top;' %>
+          <%= image_tag "quote_after_white.png", style: "max-width: 40px; vertical-align: top;" %>
           <h2 style="color: #fff; font-size: 40px; line-height: 60px"><%= t("dashboard.mailer.forward.subtitle").html_safe %></h2>
         </td>
       </tr>
diff --git a/app/views/dashboard/mailing/index.html.erb b/app/views/dashboard/mailing/index.html.erb
index 6db3347d3..2c5bec1ec 100644
--- a/app/views/dashboard/mailing/index.html.erb
+++ b/app/views/dashboard/mailing/index.html.erb
@@ -2,9 +2,9 @@
 <div class="row expanded">
   <div class="small-12 medium-9 dashboard-mail-preview column dashboard-mail-preview">
     <div class="mail-header text-left">
-      <%= image_tag 'quote-before-white.png' %>
+      <%= image_tag "quote_before_white.png" %>
       <h1 class="inline"><%= proposal.title %></h1>
-      <%= image_tag 'quote-after-white.png' %>
+      <%= image_tag "quote_after_white.png" %>
       <h2><%= t("dashboard.mailer.forward.subtitle").html_safe %></h2>
     </div>
 
diff --git a/app/views/dashboard/poster/index.html.erb b/app/views/dashboard/poster/index.html.erb
index d0589b2e0..50a0c5647 100644
--- a/app/views/dashboard/poster/index.html.erb
+++ b/app/views/dashboard/poster/index.html.erb
@@ -23,9 +23,9 @@
         </div>
         <div class="poster-content">
           <h2><%= t("dashboard.poster.index.support") %></h2>
-            <%= image_tag 'quote-before-blue.png' %>
+            <%= image_tag "quote_before_blue.png" %>
             <h3><%= proposal.title %></h3>
-            <%= image_tag 'quote-after-blue.png' %>
+            <%= image_tag "quote_after_blue.png" %>
           <p class="poster-footer">
             <%= t("dashboard.poster.index.footer", link: Setting["url"]).html_safe %>
           </p>
diff --git a/app/views/dashboard/poster/index.pdf.erb b/app/views/dashboard/poster/index.pdf.erb
index 979a31eee..d5236909e 100644
--- a/app/views/dashboard/poster/index.pdf.erb
+++ b/app/views/dashboard/poster/index.pdf.erb
@@ -30,9 +30,9 @@
     </div>
     <div class="poster-content">
       <h2 class="text-center"><strong><%= t("dashboard.poster.index.support") %></strong></h2>
-      <%= wicked_pdf_image_tag 'quote-before-blue.png' %>
+      <%= wicked_pdf_image_tag "quote_before_blue.png" %>
       <h3><strong><%= proposal.title %></strong></h3>
-      <%= wicked_pdf_image_tag 'quote-after-blue.png' %>
+      <%= wicked_pdf_image_tag "quote_after_blue.png" %>
       <p class="poster-footer">
         <%= t("dashboard.poster.index.footer", link: Setting["url"]).html_safe %>
       </p>