diff --git a/static/bootstrap/stylesheets/bootstrap/mixins/_reset-filter.scss b/static/bootstrap/stylesheets/bootstrap/mixins/_reset-filter.scss
new file mode 100644
index 0000000000000000000000000000000000000000..bf73051200ec53b4fca0fcb50eaa8bf7b7c16d23
--- /dev/null
+++ b/static/bootstrap/stylesheets/bootstrap/mixins/_reset-filter.scss
@@ -0,0 +1,8 @@
+// Reset filters for IE
+//
+// When you need to remove a gradient background, do not forget to use this to reset
+// the IE filter for IE9 and below.
+
+@mixin reset-filter() {
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}