diff --git a/internal/services/object/bucket_acl.go b/internal/services/object/bucket_acl.go
index f854221357..80ea2fe1a9 100644
--- a/internal/services/object/bucket_acl.go
+++ b/internal/services/object/bucket_acl.go
@@ -70,7 +70,7 @@ func ResourceBucketACL() *schema.Resource {
 													Type:         schema.TypeString,
 													Required:     true,
 													Description:  "Type of grantee. Valid values: `CanonicalUser`",
-													ValidateFunc: validation.StringInSlice([]string{string(s3Types.TypeCanonicalUser)}, false),
+													ValidateFunc: validation.StringInSlice((s3GranteeTypeValueToStrings()), false),
 												},
 											},
 										},
diff --git a/internal/services/object/helpers_object.go b/internal/services/object/helpers_object.go
index aacc3dcee2..1f6b8a2faa 100644
--- a/internal/services/object/helpers_object.go
+++ b/internal/services/object/helpers_object.go
@@ -729,3 +729,16 @@ func addReadBucketErrorDiagnostic(diags *diag.Diagnostics, err error, resource s
 		return true, true
 	}
 }
+
+func s3GranteeTypeValueToStrings() []string {
+	var t s3Types.Type
+	values := t.Values()
+
+	strings := make([]string, len(values))
+
+	for i, value := range values {
+		strings[i] = string(value)
+	}
+
+	return strings
+}