diff --git a/src/Psalm/Visitor/DependencyFinderVisitor.php b/src/Psalm/Visitor/DependencyFinderVisitor.php
index f236de4b9..6e76a8531 100644
--- a/src/Psalm/Visitor/DependencyFinderVisitor.php
+++ b/src/Psalm/Visitor/DependencyFinderVisitor.php
@@ -154,10 +154,12 @@ class DependencyFinderVisitor extends PhpParser\NodeVisitorAbstract implements P
                 $fq_classlike_name = ClassChecker::getAnonymousClassName($node, $this->file_path);
             } else {
                 $fq_classlike_name = ($this->aliases->namespace ? $this->aliases->namespace . '\\' : '') . $node->name;
-                $fq_classlike_name_lc = strtolower($fq_classlike_name);
-                $this->file_storage->classlikes_in_file[$fq_classlike_name_lc] = $fq_classlike_name;
             }
 
+            $fq_classlike_name_lc = strtolower($fq_classlike_name);
+
+            $this->file_storage->classlikes_in_file[$fq_classlike_name_lc] = $fq_classlike_name;
+
             $this->fq_classlike_names[] = $fq_classlike_name;
 
             $storage = $this->codebase->createClassLikeStorage($fq_classlike_name);
diff --git a/src/matt.php b/src/matt.php
new file mode 100644
index 000000000..fed05eba8
--- /dev/null
+++ b/src/matt.php
@@ -0,0 +1,15 @@
+<?php
+namespace Matt;
+
+interface I {}
+
+class C
+{
+    public function getI(): I
+    {
+        return new class implements I
+        {
+
+        };
+    }
+}