diff --git a/lib/less/tree/media.js b/lib/less/tree/media.js
index 5acb7613..6cd82143 100644
--- a/lib/less/tree/media.js
+++ b/lib/less/tree/media.js
@@ -48,19 +48,8 @@ Media.prototype.eval = function (context) {
         this.rules[0].debugInfo = this.debugInfo;
         media.debugInfo = this.debugInfo;
     }
-    var strictMathBypass = false;
-    if (!context.strictMath) {
-        strictMathBypass = true;
-        context.strictMath = true;
-    }
-    try {
-        media.features = this.features.eval(context);
-    }
-    finally {
-        if (strictMathBypass) {
-            context.strictMath = false;
-        }
-    }
+    
+    media.features = this.features.eval(context);
 
     context.mediaPath.push(media);
     context.mediaBlocks.push(media);
diff --git a/test/css/legacy/legacy.css b/test/css/legacy/legacy.css
index 24a6fa5f..bd675a85 100644
--- a/test/css/legacy/legacy.css
+++ b/test/css/legacy/legacy.css
@@ -1,4 +1,4 @@
-@media (-o-min-device-pixel-ratio: 2/1) {
+@media (-o-min-device-pixel-ratio: 2) {
   .test-math-and-units {
     font: ignores 0/0 rules;
     test-division: 7em;
diff --git a/test/less/legacy/legacy.less b/test/less/legacy/legacy.less
index 4367423d..654b2040 100644
--- a/test/less/legacy/legacy.less
+++ b/test/less/legacy/legacy.less
@@ -1,4 +1,4 @@
-@media (-o-min-device-pixel-ratio: 2/1) {
+@media (-o-min-device-pixel-ratio: 2) {
   .test-math-and-units {
     font: ignores 0/0 rules;
     test-division: 4 / 2 + 5em;