diff --git a/res/css/views/auth/_PassphraseField.scss b/res/css/views/auth/_PassphraseField.scss
index d810198213..d1b8c47d00 100644
--- a/res/css/views/auth/_PassphraseField.scss
+++ b/res/css/views/auth/_PassphraseField.scss
@@ -18,8 +18,6 @@ $PassphraseStrengthHigh: $accent-color;
 $PassphraseStrengthMedium: $username-variant5-color;
 $PassphraseStrengthLow: $notice-primary-color;
 
-.mx_PassphraseField {}
-
 @define-mixin ProgressBarColour $colour {
     color: $colour;
     &::-moz-progress-bar {