diff --git a/lib/Database.php b/lib/Database.php
index e7f33cf..7b68493 100644
--- a/lib/Database.php
+++ b/lib/Database.php
@@ -61,6 +61,10 @@ class Database {
         return false;
     }
 
+    public function driverCharsetAcceptable(): bool {
+        return $this->db->charsetAcceptable();
+    }
+
     protected function generateSet(array $props, array $valid): array {
         $out = [
             [], // query clause
diff --git a/lib/Db/Driver.php b/lib/Db/Driver.php
index 2b3d253..5485458 100644
--- a/lib/Db/Driver.php
+++ b/lib/Db/Driver.php
@@ -35,4 +35,6 @@ interface Driver {
     // ready a prepared statement for later execution
     public function prepare(string $query, ...$paramType): Statement;
     public function prepareArray(string $query, array $paramTypes): Statement;
+    // report whether the database character set is correct/acceptable
+    public function charsetAcceptable(): bool;
 }
diff --git a/lib/Db/SQLite3/Driver.php b/lib/Db/SQLite3/Driver.php
index 4d00ae4..e4d5f1e 100644
--- a/lib/Db/SQLite3/Driver.php
+++ b/lib/Db/SQLite3/Driver.php
@@ -127,6 +127,11 @@ class Driver extends \JKingWeb\Arsse\Db\AbstractDriver {
         return true;
     }
 
+    public function charsetAcceptable(): bool {
+        // SQLite 3 databases are UTF-8 internally, thus always acceptable
+        return true;
+    }
+
     protected function getError(): string {
         return $this->db->lastErrorMsg();
     }
diff --git a/lib/REST/NextCloudNews/V1_2.php b/lib/REST/NextCloudNews/V1_2.php
index f8ae072..7b33af0 100644
--- a/lib/REST/NextCloudNews/V1_2.php
+++ b/lib/REST/NextCloudNews/V1_2.php
@@ -204,6 +204,7 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             'starred'      => "bool",
             'pubDate'      => "datetime",
             'lastModified' => "datetime",
+            'guidHash'     => "string"
         ], $this->dateFormat);
         return $article;
     }
@@ -653,6 +654,7 @@ class V1_2 extends \JKingWeb\Arsse\REST\AbstractHandler {
             'arsse_version' => Arsse::VERSION,
             'warnings' => [
                 'improperlyConfiguredCron' => !Service::hasCheckedIn(),
+                'incorrectDbCharset' => !Arsse::$db->driverCharsetAcceptable(),
             ]
         ]);
     }
diff --git a/tests/Db/SQLite3/TestDbDriverSQLite3.php b/tests/Db/SQLite3/TestDbDriverSQLite3.php
index 867610a..051ebae 100644
--- a/tests/Db/SQLite3/TestDbDriverSQLite3.php
+++ b/tests/Db/SQLite3/TestDbDriverSQLite3.php
@@ -43,6 +43,10 @@ class TestDbDriverSQLite3 extends Test\AbstractTest {
         $this->assertTrue(strlen($class::driverName()) > 0);
     }
 
+    public function testCheckCharacterSetAcceptability() {
+        $this->assertTrue($this->drv->charsetAcceptable());
+    }
+
     public function testExecAValidStatement() {
         $this->assertTrue($this->drv->exec("CREATE TABLE test(id integer primary key)"));
     }
diff --git a/tests/REST/NextCloudNews/TestNCNV1_2.php b/tests/REST/NextCloudNews/TestNCNV1_2.php
index 2c42654..ed0392e 100644
--- a/tests/REST/NextCloudNews/TestNCNV1_2.php
+++ b/tests/REST/NextCloudNews/TestNCNV1_2.php
@@ -852,14 +852,17 @@ class TestNCNV1_2 extends Test\AbstractTest {
         $valid = (new \DateTimeImmutable("now", new \DateTimezone("UTC")))->sub($interval);
         $invalid = $valid->sub($interval)->sub($interval);
         Phake::when(Arsse::$db)->metaGet("service_last_checkin")->thenReturn(Date::transform($valid, "sql"))->thenReturn(Date::transform($invalid, "sql"));
+        Phake::when(Arsse::$db)->driverCharsetAcceptable->thenReturn(true)->thenReturn(false);
         $arr1 = $arr2 = [
             'version' => REST\NextCloudNews\V1_2::VERSION,
             'arsse_version' => Arsse::VERSION,
             'warnings' => [
                 'improperlyConfiguredCron' => false,
+                'incorrectDbCharset' => false,
             ]
         ];
         $arr2['warnings']['improperlyConfiguredCron'] = true;
+        $arr2['warnings']['incorrectDbCharset'] = true;
         $exp = new Response(200, $arr1);
         $this->assertEquals($exp, $this->h->dispatch(new Request("GET", "/status")));
     }
diff --git a/tests/lib/Database/SeriesMiscellany.php b/tests/lib/Database/SeriesMiscellany.php
index aa4bd47..e58c430 100644
--- a/tests/lib/Database/SeriesMiscellany.php
+++ b/tests/lib/Database/SeriesMiscellany.php
@@ -29,4 +29,9 @@ trait SeriesMiscellany {
         $this->assertSame(Database::SCHEMA_VERSION, $d->driverSchemaVersion());
         $this->assertFalse($d->driverSchemaUpdate());
     }
+
+    public function testCheckCharacterSetAcceptability() {
+        $d = new Database();
+        $this->assertInternalType("bool", $d->driverCharsetAcceptable());
+    }
 }