diff --git a/.gitignore b/.gitignore
index 675d0c50c..c90a0e72e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,8 @@
 .env.php
 .env
 .idea/
+
+# testing
 vendor/
+composer.lock
+.phpunit.cache/test-results
diff --git a/tests/Squads/AllianceRuleTest.php b/tests/Squads/AllianceRuleTest.php
index cd60cacb0..5a93e477c 100644
--- a/tests/Squads/AllianceRuleTest.php
+++ b/tests/Squads/AllianceRuleTest.php
@@ -155,4 +155,44 @@ public function testUserHasCharacterInAlliance()
                 $this->assertFalse($squad->isEligible($user));
         }
     }
+
+    /**
+     * This test checks whether a character from a corp outside an alliance is eligible for a squad with a alliance is not filter.
+     * In SeAT 4, this was not working properly
+     */
+    public function testCharacterHasNoAllianceWithAllianceIsNotFilter(){
+        $squad = new Squad([
+            'name' => 'Testing Squad',
+            'description' => 'Some description',
+            'type' => 'auto',
+            'filters' => json_encode([
+                'and' => [
+                    [
+                        'name' => 'alliance',
+                        'path' => 'characters.affiliation',
+                        'field' => 'alliance_id',
+                        'operator' => '<>',
+                        'criteria' => 99000000,
+                        'text' => 'Random Alliance',
+                    ],
+                ],
+            ]),
+        ]);
+
+        $user = User::first();
+
+        $user->characters->each(function ($character){
+            $character->affiliation->update([
+                'alliance_id' => 99000000,
+            ]);
+        });
+        $this->assertFalse($squad->isEligible($user));
+
+        $user->characters->each(function ($character){
+            $character->affiliation->update([
+                'alliance_id' => null,
+            ]);
+        });
+        $this->assertTrue($squad->isEligible($user));
+    }
 }