diff --git a/app/Harvest/Importers/AbstractImporter.php b/app/Harvest/Importers/AbstractImporter.php
index f9243679d..560e5d97f 100644
--- a/app/Harvest/Importers/AbstractImporter.php
+++ b/app/Harvest/Importers/AbstractImporter.php
@@ -8,6 +8,7 @@
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Support\Facades\DB;
 
 abstract class AbstractImporter
 {
@@ -109,8 +110,11 @@ protected function processHasMany(Model $model, $field, array $relatedRows, $all
         foreach ($relatedRows as $relatedRow) {
             $data = $this->mappers[$field]->map($relatedRow);
             $conditions = $this->getConditions($field, $data);
-            $instance = $model->$field()->firstOrNew($conditions);
-            $instance->forceFill($data);
+            $query = $model->$field();
+            foreach ($conditions as $column => $value) {
+                $query->where(DB::raw("BINARY $column"), $value);
+            }
+            $instance = $query->firstOrNew()->forceFill($data);
             $instance->save();
             $updateIds[] = $instance->getKey();
         }
@@ -139,7 +143,11 @@ protected function processBelongsToMany(Model $model, $field, array $relatedRows
         foreach ($relatedRows as $relatedRow) {
             $data = $this->mappers[$field]->map($relatedRow);
             $conditions = $this->getConditions($field, $data);
-            $relatedModel = $relatedModelClass::where($conditions)->first();
+            $query = $relatedModelClass::query();
+            foreach ($conditions as $column => $value) {
+                $query->where(DB::raw("BINARY $column"), $value);
+            }
+            $relatedModel = $query->first();
 
             if (!$relatedModel && !$allowCreate) {
                 continue;
diff --git a/tests/Harvest/Importers/AuthorityImporterTest.php b/tests/Harvest/Importers/AuthorityImporterTest.php
index c3b00efde..045b0d746 100644
--- a/tests/Harvest/Importers/AuthorityImporterTest.php
+++ b/tests/Harvest/Importers/AuthorityImporterTest.php
@@ -88,4 +88,22 @@ public function testRelatedButNotExisting()
         $authority = $this->importer->import($row, new Progress());
         $this->assertEquals(0, $authority->relationships->count());
     }
+
+    public function testAccentSensitivity()
+    {
+        $row = FakeRecordFactory::buildAuthority([
+            'names' => [
+                [
+                    'name' => ['Mařák, Július'],
+                    'prefered' => [false],
+                ],
+                [
+                    'name' => ['Marak, Julius'],
+                    'prefered' => [false],
+                ],
+            ],
+        ]);
+        $authority = $this->importer->import($row, new Progress());
+        $this->assertCount(2, $authority->names);
+    }
 }