diff --git a/libraries/classes/InsertEdit.php b/libraries/classes/InsertEdit.php
index d241723c7d..195046430d 100644
--- a/libraries/classes/InsertEdit.php
+++ b/libraries/classes/InsertEdit.php
@@ -267,7 +267,8 @@ class InsertEdit
             DatabaseInterface::CONNECT_USER,
             DatabaseInterface::QUERY_STORE
         );
-        $rows = array_fill(0, $GLOBALS['cfg']['InsertRows'], false);
+        // Can be a string on some old configuration storage settings
+        $rows = array_fill(0, (int) $GLOBALS['cfg']['InsertRows'], false);
 
         return [
             $result,
diff --git a/test/classes/InsertEditTest.php b/test/classes/InsertEditTest.php
index 0c977f8f01..e179554129 100644
--- a/test/classes/InsertEditTest.php
+++ b/test/classes/InsertEditTest.php
@@ -294,12 +294,52 @@ class InsertEditTest extends AbstractTestCase
         $this->assertFalse($result);
     }
 
+    public function dataProviderConfigValueInsertRows(): array
+    {
+        return [
+            [
+                2,
+                [
+                    false,
+                    false,
+                ],
+            ],
+            [
+                '2',
+                [
+                    false,
+                    false,
+                ],
+            ],
+            [
+                3,
+                [
+                    false,
+                    false,
+                    false,
+                ],
+            ],
+            [
+                '3',
+                [
+                    false,
+                    false,
+                    false,
+                ],
+            ],
+        ];
+    }
+
     /**
      * Test for loadFirstRow
+     *
+     * @param string|int $configValue
+     *
+     * @dataProvider dataProviderConfigValueInsertRows
      */
-    public function testLoadFirstRow(): void
+    public function testLoadFirstRow($configValue, array $rowsValue): void
     {
-        $GLOBALS['cfg']['InsertRows'] = 2;
+        $GLOBALS['cfg']['InsertRows'] = $configValue;
 
         $dbi = $this->getMockBuilder(DatabaseInterface::class)
             ->disableOriginalConstructor()
@@ -327,10 +367,7 @@ class InsertEditTest extends AbstractTestCase
         $this->assertEquals(
             [
                 'result1',
-                [
-                    false,
-                    false,
-                ],
+                $rowsValue,
             ],
             $result
         );