diff --git a/lib/philomena_web/templates/image/comment/_form.html.slime b/lib/philomena_web/templates/image/comment/_form.html.slime
index 8ce81438..a504c3ea 100644
--- a/lib/philomena_web/templates/image/comment/_form.html.slime
+++ b/lib/philomena_web/templates/image/comment/_form.html.slime
@@ -25,7 +25,7 @@
       ' [Loading preview...]
 
     .block__content.communication-edit__actions
-      => submit "Post", class: "button"
+      => submit "Post", class: "button", data: [disable_with: raw("Posting…")]
 
       = if @conn.assigns.current_user do
         = checkbox f, :anonymous, value: anonymous_by_default?(@conn)
diff --git a/lib/philomena_web/templates/topic/new.html.slime b/lib/philomena_web/templates/topic/new.html.slime
index 4774fd7d..8c7dc23a 100644
--- a/lib/philomena_web/templates/topic/new.html.slime
+++ b/lib/philomena_web/templates/topic/new.html.slime
@@ -83,4 +83,4 @@
       ' [Loading preview...]
 
     .block__content.communication-edit__actions
-      = submit "Post", class: "button"
+      = submit "Post", class: "button", data: [disable_with: raw("Posting…")]
diff --git a/lib/philomena_web/templates/topic/post/_form.html.slime b/lib/philomena_web/templates/topic/post/_form.html.slime
index 968148e7..bfc7b191 100644
--- a/lib/philomena_web/templates/topic/post/_form.html.slime
+++ b/lib/philomena_web/templates/topic/post/_form.html.slime
@@ -25,7 +25,7 @@
       ' [Loading preview...]
 
     .block__content.communication-edit__actions
-      = submit "Post", class: "button"
+      => submit "Post", class: "button", data: [disable_with: raw("Posting…")]
 
       = if @conn.assigns.current_user do
         = checkbox f, :anonymous, value: anonymous_by_default?(@conn)