diff --git a/lib/file-types.css b/lib/file-types.css
index 546721b..7dc95b6 100644
--- a/lib/file-types.css
+++ b/lib/file-types.css
@@ -2,7 +2,7 @@
 	margin: 15px 0 15px 20px;
 	-webkit-user-select: none;
 	-moz-user-select: none;
-	-o-user-select: none;
+	-ms-user-select: none;
 	user-select: none;
 }
 
diff --git a/lib/help.css b/lib/help.css
index e30e075..77ac932 100644
--- a/lib/help.css
+++ b/lib/help.css
@@ -19,7 +19,7 @@ table, caption, tbody, tfoot, thead, tr, th, td {
 body {overflow: hidden;
 	-webkit-user-select: none;
 	-moz-user-select: none;
-	-o-user-select:none;
+	-ms-user-select: none;
 	user-select: none;
 }
 
diff --git a/lib/multiple-results.css b/lib/multiple-results.css
index db4cf02..d642b49 100644
--- a/lib/multiple-results.css
+++ b/lib/multiple-results.css
@@ -19,7 +19,7 @@ table, caption, tbody, tfoot, thead, tr, th, td {
 body {overflow: hidden;
 	-webkit-user-select: none;
 	-moz-user-select: none;
-	-o-user-select:none;
+	-ms-user-select: none;
 	user-select: none;
 }