diff --git a/src/models/predicates.js b/src/models/predicates.js
index 8fdf52c84..a36d1fa45 100644
--- a/src/models/predicates.js
+++ b/src/models/predicates.js
@@ -82,11 +82,19 @@ function orderIndependent (possibleArray) {
     }
 }
 
+function transformObject (obj, transform) {
+    Object.keys(obj).forEach(function (key) {
+        obj[key] = transform(obj[key]);
+    });
+    return obj;
+}
+
 function selectXPath (config, caseTransform, encoding, text) {
     var xpath = require('./xpath'),
         combinators = require('../util/combinators'),
-        ns = normalize(config.ns, {}, 'utf8'),
+        ns = transformObject(config.ns || {}, caseTransform),
         selectFn = combinators.curry(xpath.select, caseTransform(config.selector), ns, text);
+
     return orderIndependent(select('xpath', selectFn, encoding));
 }
 
diff --git a/test/models/predicates/xpathTest.js b/test/models/predicates/xpathTest.js
index 9c9ee597b..6023ad41c 100644
--- a/test/models/predicates/xpathTest.js
+++ b/test/models/predicates/xpathTest.js
@@ -211,6 +211,19 @@ describe('predicates', function () {
             assert.ok(predicates.evaluate(predicate, request));
         });
 
+        it('#equals should be true if caseSensitive and namespace has capital letters in URL', function () {
+            var predicate = {
+                    equals: { field: 'Harry Potter' },
+                    caseSensitive: true,
+                    xpath: {
+                        selector: '//bookml:title/text()',
+                        ns: { bookml: 'http://EXAMPLE.COM/book' }
+                    }
+                },
+                request = { field: '<book xmlns:bookml="http://EXAMPLE.COM/book"><bookml:title>Harry Potter</bookml:title></book>' };
+            assert.ok(predicates.evaluate(predicate, request));
+        });
+
         it('#endsWith should be false if aliased namespace match does not end with predicate', function () {
             var predicate = {
                     endsWith: { field: 'Harry' },