diff --git a/src/Psalm/Internal/Provider/ParserCacheProvider.php b/src/Psalm/Internal/Provider/ParserCacheProvider.php
index 09543d00a..df753a088 100644
--- a/src/Psalm/Internal/Provider/ParserCacheProvider.php
+++ b/src/Psalm/Internal/Provider/ParserCacheProvider.php
@@ -321,7 +321,7 @@ class ParserCacheProvider
     {
         $cache_directory = Config::getInstance()->getCacheDirectory();
 
-        if ($cache_directory) {
+        if (!$cache_directory) {
             return 0;
         }