diff --git a/ghost/core/core/frontend/src/cards/css/signup.css b/ghost/core/core/frontend/src/cards/css/signup.css
index 74eb3e18c2..3817e5cecd 100644
--- a/ghost/core/core/frontend/src/cards/css/signup.css
+++ b/ghost/core/core/frontend/src/cards/css/signup.css
@@ -263,6 +263,10 @@
     display: none;
 }
 
+.kg-signup-card-form.loading .kg-signup-card-button-default {
+    color: transparent;
+}
+
 .kg-signup-card-form.loading .kg-signup-card-button-loading {
     display: flex;
 }
@@ -313,4 +317,4 @@
     .kg-signup-card.kg-width-full.kg-layout-split h3.kg-signup-card-subheading {
         font-size: 1.1em;
     }
-}
\ No newline at end of file
+}