diff --git a/src/consent.js b/src/consent.js
index 38c1c3b..b1ae5f2 100644
--- a/src/consent.js
+++ b/src/consent.js
@@ -90,7 +90,10 @@ ConsentHandler.prototype.generateConsentStatePayloadFromMappings = function (
 
     for (var i = 0; i <= mappings.length - 1; i++) {
         var mappingEntry = mappings[i];
-        var mpMappedConsentName = mappingEntry.map;
+        // Although consent purposes can be inputted into the UI in any casing
+        // the SDK will automatically lowercase them to prevent pseudo-duplicate
+        // consent purposes, so we call `toLowerCase` on the consentMapping purposes here
+        var mpMappedConsentName = mappingEntry.map.toLowerCase();
         var googleMappedConsentName = mappingEntry.value;
 
         if (
diff --git a/test/tests.js b/test/tests.js
index 7fb1412..5e10073 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -508,25 +508,25 @@ describe('DoubleClick', function () {
         var consentMap = [
             {
                 jsmap: null,
-                map: 'some_consent',
+                map: 'Some_consent',
                 maptype: 'ConsentPurposes',
                 value: 'ad_user_data',
             },
             {
                 jsmap: null,
-                map: 'storage_consent',
+                map: 'Storage_consent',
                 maptype: 'ConsentPurposes',
                 value: 'analytics_storage',
             },
             {
                 jsmap: null,
-                map: 'other_test_consent',
+                map: 'Other_test_consent',
                 maptype: 'ConsentPurposes',
                 value: 'ad_storage',
             },
             {
                 jsmap: null,
-                map: 'test_consent',
+                map: 'Test_consent',
                 maptype: 'ConsentPurposes',
                 value: 'ad_personalization',
             },
@@ -541,7 +541,7 @@ describe('DoubleClick', function () {
                 {
                     conversionId: 'AW-123123123',
                     consentMappingWeb:
-                        '[{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;some_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_user_data&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;storage_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;analytics_storage&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;other_test_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_storage&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;test_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_personalization&quot;}]',
+                        '[{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;Some_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_user_data&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;Storage_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;analytics_storage&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;Other_test_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_storage&quot;},{&quot;jsmap&quot;:null,&quot;map&quot;:&quot;Test_consent&quot;,&quot;maptype&quot;:&quot;ConsentPurposes&quot;,&quot;value&quot;:&quot;ad_personalization&quot;}]',
                     eventMapping: '[]',
                     customVariables: '[]',
                 },