diff --git a/_rem.scss b/_rem.scss
index 739e8a6..7395810 100644
--- a/_rem.scss
+++ b/_rem.scss
@@ -49,8 +49,8 @@ $rem-px-only: false !default;
 
 @mixin rem($properties, $values...) {
   @if type-of($properties) == "map" {
-    @each $property, $values in $properties {
-      @include rem($property, $values...);
+    @each $property in map-keys($properties) {
+      @include rem($property, map-get($properties, $property));
     }
   } @else {
     @each $property in $properties {
diff --git a/bower.json b/bower.json
index 10efaa5..3b854d9 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
 {
   "name": "sass-rem",
   "description": "Sass mixin and function to use rem units with pixel fallback.",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "homepage": "https://github.com/pierreburel/sass-rem",
   "main": "_rem.scss",
   "authors": [
diff --git a/package.json b/package.json
index 2000ae6..14c4719 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sass-rem",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Sass mixin and function to use rem units with pixel fallback.",
   "keywords": [
     "sass",