diff --git a/system/Validation/Validation.php b/system/Validation/Validation.php
index b03badb9bf43..5dbf4b7f5d93 100644
--- a/system/Validation/Validation.php
+++ b/system/Validation/Validation.php
@@ -356,8 +356,10 @@ protected function processRules(
 
                 $param = ($param === false) ? '' : $param;
 
+                $fieldForErrors = ($rule === 'field_exists') ? $originalField : $field;
+
                 // @phpstan-ignore-next-line $error may be set by rule methods.
-                $this->errors[$field] = $error ?? $this->getErrorMessage(
+                $this->errors[$fieldForErrors] = $error ?? $this->getErrorMessage(
                     ($this->isClosure($rule) || $arrayCallable) ? (string) $i : $rule,
                     $field,
                     $label,
diff --git a/tests/system/Validation/RulesTest.php b/tests/system/Validation/RulesTest.php
index 844daab3f005..4844d898e3a9 100644
--- a/tests/system/Validation/RulesTest.php
+++ b/tests/system/Validation/RulesTest.php
@@ -948,8 +948,7 @@ public function testFieldExistsErrorMessage(): void
 
         $this->assertFalse($this->validation->run($data));
         $this->assertSame(
-            // This errror message is not perfect.
-            ['fiz.bar.baz' => 'The fiz.*.baz field must exist.'],
+            ['fiz.*.baz' => 'The fiz.*.baz field must exist.'],
             $this->validation->getErrors()
         );
     }