diff --git a/dictionaries/CallMap.php b/dictionaries/CallMap.php
index ebe83286816..b6436c18be7 100644
--- a/dictionaries/CallMap.php
+++ b/dictionaries/CallMap.php
@@ -3329,7 +3329,7 @@
 'gettimeofday' => ['array<string, int>'],
 'gettimeofday\'1' => ['float', 'as_float='=>'true'],
 'gettype' => ['string', 'value'=>'mixed'],
-'glob' => ['list<string>|false', 'pattern'=>'string', 'flags='=>'int'],
+'glob' => ['list<non-empty-string>|false', 'pattern'=>'non-empty-string', 'flags='=>'int<1, max>'],
 'GlobIterator::__construct' => ['void', 'pattern'=>'string', 'flags='=>'int'],
 'GlobIterator::count' => ['int'],
 'GlobIterator::current' => ['FilesystemIterator|SplFileInfo|string'],
diff --git a/dictionaries/CallMap_historical.php b/dictionaries/CallMap_historical.php
index dfdde0f5c86..28b1cbb6fc6 100644
--- a/dictionaries/CallMap_historical.php
+++ b/dictionaries/CallMap_historical.php
@@ -10727,7 +10727,7 @@
     'gettimeofday' => ['array<string, int>'],
     'gettimeofday\'1' => ['float', 'as_float='=>'true'],
     'gettype' => ['string', 'value'=>'mixed'],
-    'glob' => ['list<string>|false', 'pattern'=>'string', 'flags='=>'int'],
+    'glob' => ['list<non-empty-string>|false', 'pattern'=>'non-empty-string', 'flags='=>'int<1, max>'],
     'gmdate' => ['string', 'format'=>'string', 'timestamp='=>'int'],
     'gmmktime' => ['int|false', 'hour='=>'int', 'minute='=>'int', 'second='=>'int', 'month='=>'int', 'day='=>'int', 'year='=>'int'],
     'gmp_abs' => ['GMP', 'num'=>'GMP|string|int'],
diff --git a/src/Psalm/Config/FileFilter.php b/src/Psalm/Config/FileFilter.php
index 01b1656e6c5..cefa55b0ce0 100644
--- a/src/Psalm/Config/FileFilter.php
+++ b/src/Psalm/Config/FileFilter.php
@@ -122,6 +122,7 @@ public static function loadFromArray(
                 $declare_strict_types = (bool) ($directory['useStrictTypes'] ?? false);
 
                 if ($directory_path[0] === '/' && DIRECTORY_SEPARATOR === '/') {
+                    /** @var non-empty-string */
                     $prospective_directory_path = $directory_path;
                 } else {
                     $prospective_directory_path = $base_dir . DIRECTORY_SEPARATOR . $directory_path;
@@ -238,6 +239,7 @@ public static function loadFromArray(
                 $file_path = (string) ($file['name'] ?? '');
 
                 if ($file_path[0] === '/' && DIRECTORY_SEPARATOR === '/') {
+                    /** @var non-empty-string */
                     $prospective_file_path = $file_path;
                 } else {
                     $prospective_file_path = $base_dir . DIRECTORY_SEPARATOR . $file_path;
diff --git a/tests/CallableTest.php b/tests/CallableTest.php
index e2e860513c4..0e5a799161e 100644
--- a/tests/CallableTest.php
+++ b/tests/CallableTest.php
@@ -1365,7 +1365,10 @@ function f(callable $p): void {}',
             ],
             'fileExistsCallable' => [
                 'code' => '<?php
-                    /** @return string[] */
+                    /**
+                     * @param non-empty-string $prospective_file_path
+                     * @return non-empty-string[]
+                     */
                     function foo(string $prospective_file_path) : array {
                         return array_filter(
                             glob($prospective_file_path),