diff --git a/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/VariableFetchAnalyzer.php b/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/VariableFetchAnalyzer.php
index 8b3f8de7a7a..303caa17ce1 100644
--- a/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/VariableFetchAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/VariableFetchAnalyzer.php
@@ -541,18 +541,28 @@ public static function getGlobalType(string $var_id, int $codebase_analysis_php_
 
         if ($var_id === '$argv') {
             // only in CLI, null otherwise
-            return new Union([
+            $argv_nullable = new Union([
                 new TNonEmptyList(Type::getString()),
                 new TNull()
             ]);
+            // use TNull explicitly instead of this
+            // as it will cause weird errors due to ignore_nullable_issues true
+            // e.g. InvalidPropertyAssignmentValue
+            // $this->argv 'list<string>' cannot be assigned type 'non-empty-list<string>'
+            // $argv_nullable->possibly_undefined = true;
+            $argv_nullable->ignore_nullable_issues = true;
+            return $argv_nullable;
         }
 
         if ($var_id === '$argc') {
             // only in CLI, null otherwise
-            return new Union([
+            $argc_nullable = new Union([
                 new TIntRange(1, null),
                 new TNull()
             ]);
+            // $argc_nullable->possibly_undefined = true;
+            $argc_nullable->ignore_nullable_issues = true;
+            return $argc_nullable;
         }
 
         if (!self::isSuperGlobal($var_id)) {
diff --git a/tests/Internal/CliUtilsTest.php b/tests/Internal/CliUtilsTest.php
index a2bfe9cb6fc..928eb0152f1 100644
--- a/tests/Internal/CliUtilsTest.php
+++ b/tests/Internal/CliUtilsTest.php
@@ -12,14 +12,14 @@
 class CliUtilsTest extends TestCase
 {
     /**
-     * @var array<int, string>
+     * @var list<string>
      */
     private $argv = [];
 
     protected function setUp(): void
     {
         global $argv;
-        $this->argv = $argv ?? [];
+        $this->argv = $argv;
     }
 
     protected function tearDown(): void