diff --git a/packages/core/History.md b/packages/core/History.md
index bde87c8..e0446dc 100644
--- a/packages/core/History.md
+++ b/packages/core/History.md
@@ -1,5 +1,15 @@
 ## vNEXT
 
+## v2.0.0-preview.24 (2017-05-04)
+
+### Added
+
+* Allow `mf('key', 'text', params)` in addition to the regular
+  `mf('key', params, 'text')`  Previously, `mf('key', 'text')` was accepted
+  too, but there was no way to provide `params` in this ordering.  Now if
+  the second argument is a String, the second and third arguments are swapped.
+  (#253).
+
 ## v2.0.0-preview.23 (2016-09-05)
 
 ### Changed
diff --git a/packages/core/lib/msgfmt.js b/packages/core/lib/msgfmt.js
index 739fea0..d5f2ddb 100644
--- a/packages/core/lib/msgfmt.js
+++ b/packages/core/lib/msgfmt.js
@@ -159,6 +159,8 @@ msgfmt.addFormat('number', { ZAR: { style: 'currency', currency: 'ZAR' } });
 msgfmt.addCurrencyShortcut('ILS');
 
 mf = function mfcall(key, params, message, locale) {
+    var tmp;
+
     if (!locale) {
       if (Meteor.isClient) {
         locale = Session.get('locale');
@@ -176,12 +178,13 @@ mf = function mfcall(key, params, message, locale) {
         }
 
       }
-    }    
+    }
     if (!locale || (!mfPkg.strings[locale] && !mfPkg.compiled[locale]))
         locale = mfPkg.native;
     if (_.isString(params)) {
+        tmp = message;
         message = params;
-        params = null;
+        params = tmp;
     }
 
     var mf = mfPkg.objects[locale];
@@ -226,7 +229,7 @@ mf = function mfcall(key, params, message, locale) {
             // Give up
         }
     }
-    
+
     return formatted;
 }
 
diff --git a/packages/core/package.js b/packages/core/package.js
index d787993..09be223 100644
--- a/packages/core/package.js
+++ b/packages/core/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   name:    "msgfmt:core",
-  version: "2.0.0-preview.23",
+  version: "2.0.0-preview.24",
   summary: "MessageFormat i18n support, the Meteor way",
   git:     "https://github.com/gadicc/meteor-messageformat.git",
   documentation: 'README.md'