diff --git a/lib/template.js b/lib/template.js
index a54e87b..1010c92 100644
--- a/lib/template.js
+++ b/lib/template.js
@@ -1092,8 +1092,8 @@ class Template {
             }
 
             if (error.keyword === 'enum') {
-                const allowedValues = error.params.allowedValues;
-                message = `${message}: ${allowedValues.join(', ')}`;
+                const allowedValues = error.params.allowedValues.join(', ');
+                details = `allowed values are: ${allowedValues}`;
             }
 
             if (error.keyword === 'pattern') {
diff --git a/test/template.js b/test/template.js
index a141d55..4e8f334 100644
--- a/test/template.js
+++ b/test/template.js
@@ -1349,7 +1349,8 @@ describe('Template class tests', function () {
                             message: 'parameter fooArray[1] should be of type string'
                         },
                         {
-                            message: 'parameter fooEnum should be equal to one of the allowed values: foo, bar'
+                            message: 'parameter fooEnum should be equal to one of the allowed values',
+                            details: 'allowed values are: foo, bar'
                         },
                         {
                             message: 'parameter foo should be of type string'