diff --git a/src/Psalm/Type/Union.php b/src/Psalm/Type/Union.php
index 6185c7e457e..fecb487366e 100644
--- a/src/Psalm/Type/Union.php
+++ b/src/Psalm/Type/Union.php
@@ -1045,11 +1045,11 @@ public function isAlwaysTruthy(): bool
                 continue;
             }
 
-            if ($atomic_type instanceof Type\Atomic\TNonEmptyString) {
+            if ($atomic_type instanceof Type\Atomic\TNonFalsyString) {
                 continue;
             }
 
-            if ($atomic_type instanceof Type\Atomic\TNonEmptyNonspecificLiteralString) {
+            if ($atomic_type instanceof Type\Atomic\TCallableString) {
                 continue;
             }