diff --git a/examples/error/call-str-method.php b/examples/error/call-str-method.php
new file mode 100644
index 00000000..c39b9b02
--- /dev/null
+++ b/examples/error/call-str-method.php
@@ -0,0 +1,15 @@
+<?php
+function bar(): stdClass
+{
+    return new stdClass();
+}
+function foo(string $o)
+{
+    $o2 = bar();
+    $o2->call();
+}
+
+function main()
+{
+    foo("hello");
+}
diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index cd9012e5..c6611f48 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -4137,6 +4137,10 @@ class CompilerBase extends \PhpAot\Core\Translator
 
         // 可转为原生调用的 MethodCall
         if ($this->isVarExpr($expr->var) and $this->isNamedMethod($expr->name)) {
+            $type = $this->getVarType($object);
+            if (!$this->checkArgType($type, self::TYPE_OBJECT)) {
+                $this->fatalError($expr, 'Cannot call method `' . $expr->name->toString() . '()` on variable of type ' . $type);
+            }
             $this->context->beforeStmtLines[] = '// Method Call: ' . $object . '->' . $this->parseIdentifier($expr->name) . '()';
             try {
                 $nativeFunc = $this->findNativeMethod($expr, $object, $this->parseIdentifier($expr->name));
diff --git a/src/Php/Reflection.php b/src/Php/Reflection.php
index e2b1a3a7..e05dd2c0 100644
--- a/src/Php/Reflection.php
+++ b/src/Php/Reflection.php
@@ -177,14 +177,14 @@ class Reflection
 
     public static function getMethodReturnType(string $class, string $method): ?string
     {
-        $class = self::getClass($class);
-        if (!$class) {
+        $classRef = self::getClass($class);
+        if (!$classRef) {
             return null;
         }
-        if (!$class->hasMethod($method)) {
+        if (!$classRef->hasMethod($method)) {
             return null;
         }
-        $method = $class->getMethod($method);
-        return $method->getReturnType() ? $method->getReturnType()->getName() : null;
+        $methodDef = $classRef->getMethod($method);
+        return $methodDef->getReturnType() ? $methodDef->getReturnType()->getName() : null;
     }
 }