diff --git a/lodash.js b/lodash.js
index 31841a83d..e53ebfa08 100644
--- a/lodash.js
+++ b/lodash.js
@@ -102,7 +102,7 @@
   var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
 
   /** Used to match words to create compound words */
-  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g;
+  var reWords = /[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]+|[0-9]+/g;
 
   /** Used to detect and test whitespace */
   var whitespace = (
diff --git a/test/test.js b/test/test.js
index 2e10a08fe..61a7fcf1a 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1286,7 +1286,8 @@
 
   _.each(['camel', 'kebab', 'snake'], function(caseName) {
     var methodName = caseName + 'Case',
-        func = _[methodName];
+        func = _[methodName],
+        isCamel = caseName == 'camel';
 
     var expected = (function() {
       switch (caseName) {
@@ -1322,10 +1323,13 @@
       });
     });
 
+    test('`_.' + methodName + '` should work with words in all caps', 1, function() {
+      strictEqual(func('HELLO WORLD'), isCamel ? 'helloWORLD' : expected);
+    });
+
     test('`_.' + methodName + '` should deburr letters', 1, function() {
       var actual = _.map(burredLetters, function(burred, index) {
-        var isCamel = caseName == 'camel',
-            deburrLetter = deburredLetters[index];
+        var deburrLetter = deburredLetters[index];
 
         var string = isCamel
           ? func('z' + burred)