diff --git a/apps/files/css/upload.scss b/apps/files/css/upload.scss
index 4685b20d43a..5263a4b0e03 100644
--- a/apps/files/css/upload.scss
+++ b/apps/files/css/upload.scss
@@ -1,6 +1,4 @@
 #upload {
-	-moz-box-sizing: border-box;
-	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 	height: 36px;
 	width: 39px;
@@ -26,8 +24,6 @@
 .file_upload_form { display:inline; float:left; margin:0; padding:0; cursor:pointer; overflow:visible; }
 
 #uploadprogresswrapper, #uploadprogresswrapper * {
-	-moz-box-sizing: border-box;
-	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 }
 
diff --git a/core/css/jquery.ocdialog.scss b/core/css/jquery.ocdialog.scss
index efb2cc2f2e3..414443a5d3c 100644
--- a/core/css/jquery.ocdialog.scss
+++ b/core/css/jquery.ocdialog.scss
@@ -6,8 +6,6 @@
 	padding: 15px;
 	z-index: 10000;
 	font-size: 100%;
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
 	box-sizing: border-box;
 	min-width: 200px;
 	top: 50%;
diff --git a/settings/css/settings.scss b/settings/css/settings.scss
index b21f052a15f..85ca66542a3 100644
--- a/settings/css/settings.scss
+++ b/settings/css/settings.scss
@@ -1084,8 +1084,6 @@ table.grid td.date {
 }
 
 #selectGroups select {
-	-moz-box-sizing: border-box;
-	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 	display: inline-block;
 	height: 36px;