diff --git a/app/Models/CustomFieldset.php b/app/Models/CustomFieldset.php
index 4d960ede4..71be28e8a 100644
--- a/app/Models/CustomFieldset.php
+++ b/app/Models/CustomFieldset.php
@@ -103,6 +103,10 @@ class CustomFieldset extends Model
             if ($field->element == 'checkbox') {
                 $rules[$field->db_column_name()][] = 'checkboxes';
             }
+
+            if ($field->element == 'radio') {
+                $rules[$field->db_column_name()][] = 'radio_buttons';
+            }
         }
 
         return $rules;
diff --git a/app/Providers/ValidationServiceProvider.php b/app/Providers/ValidationServiceProvider.php
index d13898fb3..803d54086 100644
--- a/app/Providers/ValidationServiceProvider.php
+++ b/app/Providers/ValidationServiceProvider.php
@@ -322,6 +322,14 @@ class ValidationServiceProvider extends ServiceProvider
 
             return true;
         });
+
+        // Validates that a radio button option exists
+        Validator::extend('radio_buttons', function ($attribute, $value) {
+            $field = CustomField::where('db_column', $attribute)->first();
+            $options = $field->formatFieldValuesAsArray();
+
+            return in_array($value, $options);
+        });
     }
 
     /**
diff --git a/resources/lang/en-US/validation.php b/resources/lang/en-US/validation.php
index 98084afcd..d027a93f8 100644
--- a/resources/lang/en-US/validation.php
+++ b/resources/lang/en-US/validation.php
@@ -106,6 +106,7 @@ return [
         'numeric'          => 'Value cannot be negative'
     ],
     'checkboxes'           => ':attribute contains invalid options.',
+    'radio_buttons'        => ':attribute is invalid.',
 
 
     /*