diff --git a/phpBB/styles/prosilver/theme/buttons.css b/phpBB/styles/prosilver/theme/buttons.css
index 19cb547bd4..c5e97d03c4 100644
--- a/phpBB/styles/prosilver/theme/buttons.css
+++ b/phpBB/styles/prosilver/theme/buttons.css
@@ -143,7 +143,7 @@ ul.linklist.bulletin li.small-icon:before {
 .phpbb_website-icon		{ background-position: -40px 0; }
 .phpbb_youtube-icon		{ background-position: -98px 0; }
 .phpbb_facebook-icon	{ background-position: -119px 0; }
-.phpbb_google_plus-icon	{ background-position: -140px 0; }
+.phpbb_googleplus-icon	{ background-position: -140px 0; }
 .phpbb_skype-icon		{ background-position: -161px 0; }
 .phpbb_twitter-icon		{ background-position: -203px 0; }
 .phpbb_yahoo-icon		{ background-position: -224px 0; }