diff --git a/src/sentry/src/Aspect/SingletonAspect.php b/src/sentry/src/Aspect/SingletonAspect.php
index d64e5c2c8..aa7c6c841 100644
--- a/src/sentry/src/Aspect/SingletonAspect.php
+++ b/src/sentry/src/Aspect/SingletonAspect.php
@@ -40,7 +40,7 @@ public function process(ProceedingJoinPoint $proceedingJoinPoint)
         $key = $className = $proceedingJoinPoint->className;
         $arguments = $proceedingJoinPoint->getArguments();
 
-        if (! array_key_exists(0, $arguments)) {
+        if (array_key_exists(0, $arguments)) {
             $key .= '#' . $arguments[0];
         }