diff --git a/src/lint/linter/xhpast/ArcanistXHPASTLinter.php b/src/lint/linter/xhpast/ArcanistXHPASTLinter.php
index d6aafab7..38e21513 100644
--- a/src/lint/linter/xhpast/ArcanistXHPASTLinter.php
+++ b/src/lint/linter/xhpast/ArcanistXHPASTLinter.php
@@ -405,7 +405,7 @@ class ArcanistXHPASTLinter extends ArcanistLinter {
       // ($declarations).
 
       foreach ($vars as $var) {
-        $concrete = $var->getConcreteString();
+        $concrete = $this->getConcreteVariableString($var);
         $declarations[$concrete] = min(
           idx($declarations, $concrete, PHP_INT_MAX),
           $var->getOffset());
@@ -445,7 +445,7 @@ class ArcanistXHPASTLinter extends ArcanistLinter {
           // figure out.
           continue;
         }
-        $concrete = $var->getConcreteString();
+        $concrete = $this->getConcreteVariableString($var);
         if ($var->getOffset() >= idx($declarations, $concrete, PHP_INT_MAX)) {
           // The use appears after the variable is declared, so it's fine.
           continue;
@@ -466,6 +466,13 @@ class ArcanistXHPASTLinter extends ArcanistLinter {
     }
   }
 
+  private function getConcreteVariableString($var) {
+    $concrete = $var->getConcreteString();
+    // Strip off curly braces as in $obj->{$property}.
+    $concrete = trim($concrete, '{}');
+    return $concrete;
+  }
+
   protected function lintPHPTagUse($root) {
     $tokens = $root->getTokens();
     foreach ($tokens as $token) {
diff --git a/src/lint/linter/xhpast/__tests__/data/undeclared-variables.lint-test b/src/lint/linter/xhpast/__tests__/data/undeclared-variables.lint-test
index 4e2f723e..0add1437 100644
--- a/src/lint/linter/xhpast/__tests__/data/undeclared-variables.lint-test
+++ b/src/lint/linter/xhpast/__tests__/data/undeclared-variables.lint-test
@@ -155,7 +155,10 @@ class A {
     return 2;
   }
 }
-  
+
+function arrow($o, $x) {
+  echo $o->{$x->{$x->{$x.$x->{$x}}.$x}};
+}
 
 ~~~~~~~~~~
 error:30:3