diff --git a/css/font-awesome.css b/css/font-awesome.css
index eb4127b73..22f0edcd3 100644
--- a/css/font-awesome.css
+++ b/css/font-awesome.css
@@ -157,6 +157,13 @@
   -o-transform: scale(1, -1);
   transform: scale(1, -1);
 }
+:root .fa-rotate-90,
+:root .fa-rotate-180,
+:root .fa-rotate-270,
+:root .fa-flip-horizontal,
+:root .fa-flip-vertical {
+  filter: none;
+}
 .fa-stack {
   position: relative;
   display: inline-block;
diff --git a/less/rotated-flipped.less b/less/rotated-flipped.less
index 8fff3a6c4..564b4f564 100644
--- a/less/rotated-flipped.less
+++ b/less/rotated-flipped.less
@@ -7,3 +7,12 @@
 
 .@{fa-css-prefix}-flip-horizontal { .fa-icon-flip(-1, 1, 0); }
 .@{fa-css-prefix}-flip-vertical   { .fa-icon-flip(1, -1, 2); }
+
+// Hook for IE8-9
+:root .@{fa-css-prefix}-rotate-90,
+:root .@{fa-css-prefix}-rotate-180,
+:root .@{fa-css-prefix}-rotate-270,
+:root .@{fa-css-prefix}-flip-horizontal,
+:root .@{fa-css-prefix}-flip-vertical {
+  filter: none;
+}