diff --git a/src/Parser/ClassParser.php b/src/Parser/ClassParser.php
index e23a069..0864d76 100644
--- a/src/Parser/ClassParser.php
+++ b/src/Parser/ClassParser.php
@@ -104,7 +104,7 @@ public function getUsedClasses(): array
                     if ($nStatement instanceof Use_) {
                         /** @var UseUse $use */
                         foreach ($nStatement->uses as $use) {
-                            $className = $use->name->parts[array_key_last($use->name->parts)];
+                            $className = $use->alias ? $use->alias->name : $use->name->parts[array_key_last($use->name->parts)];
                             $usedClasses[$className] = implode('\\', $use->name->parts);
                         }
                     }
@@ -190,11 +190,21 @@ private function getParentClassStatements(): ?array
             return [];
         }
 
-        if (null !== $usedClasses[$this->getParentClassName()]) {
+        if (null !== @$usedClasses[$this->getParentClassName()]) {
             $parentClass = $usedClasses[$this->getParentClassName()];
         }
 
-        $rc = new ReflectionClass($parentClass);
+        try {
+            $rc = new ReflectionClass($parentClass);
+        }
+        catch (\ReflectionException $e) {
+            try {
+                $rc = new ReflectionClass($this->getNamespace() . '\\' . $parentClass);
+            }
+            catch (\ReflectionException $e) {
+                throw new ReflectionException("Parent class [{$parentClass}] for [{$this->getNamespace()}\\{$this->getClassName()}] not found!", $e->getCode(), $e);
+            }
+        }
         $filename = $rc->getFileName();
 
         if (false === $filename) {