diff --git a/src/Psalm/Internal/Analyzer/Statements/UnsetAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/UnsetAnalyzer.php
index 3943db8e46d..febeb353ee6 100644
--- a/src/Psalm/Internal/Analyzer/Statements/UnsetAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/UnsetAnalyzer.php
@@ -50,6 +50,7 @@ public static function analyze(
                                 || $var->dim instanceof PhpParser\Node\Scalar\LNumber
                             ) {
                                 if (isset($atomic_root_type->properties[$var->dim->value])) {
+                                    $atomic_root_type->is_list = false;
                                     unset($atomic_root_type->properties[$var->dim->value]);
                                     $root_type->bustCache(); //remove id cache
                                 }
diff --git a/tests/ArrayAccessTest.php b/tests/ArrayAccessTest.php
index c391582d3a7..38c4f3c41e2 100644
--- a/tests/ArrayAccessTest.php
+++ b/tests/ArrayAccessTest.php
@@ -1024,6 +1024,13 @@ function f($p): int {
                         return $p["name"];
                     }'
             ],
+            'unsetListKeyedArrayDisableListFlag' => [
+                '<?php
+                $a = ["a", "b"];
+                unset($a[0]);
+                ',
+                'assertions' => ['$a===' => 'array{1: "b"}']
+            ],
         ];
     }