diff --git a/packages/less/Gruntfile.js b/packages/less/Gruntfile.js
index 8d30d93a7..bf967b102 100644
--- a/packages/less/Gruntfile.js
+++ b/packages/less/Gruntfile.js
@@ -251,6 +251,7 @@ module.exports = function(grunt) {
                 command: [
                     // @TODO: make this more thorough
                     // CURRENT OPTIONS
+                    `node bin/lessc --ie-compat ${lessFolder}/_main/lazy-eval.less tmp/lazy-eval.css`,
                     // --math
                     `node bin/lessc --math=always ${lessFolder}/_main/lazy-eval.less tmp/lazy-eval.css`,
                     `node bin/lessc --math=parens-division ${lessFolder}/_main/lazy-eval.less tmp/lazy-eval.css`,
diff --git a/packages/less/bin/lessc b/packages/less/bin/lessc
index 82420826b..18599a728 100755
--- a/packages/less/bin/lessc
+++ b/packages/less/bin/lessc
@@ -516,6 +516,10 @@ function processPluginQueue() {
         }
 
         break;
+      
+      case 'ie-compat':
+        console.warn('The --ie-compat option is deprecated, as it has no effect on compilation.');
+        break;
 
       case 'relative-urls':
         console.warn('The --relative-urls option has been deprecated. Use --rewrite-urls=all.');