diff --git a/plugins/system/debug/src/DataFormatter.php b/plugins/system/debug/src/DataFormatter.php
index 3ba543fd79c87..e7f2738089131 100644
--- a/plugins/system/debug/src/DataFormatter.php
+++ b/plugins/system/debug/src/DataFormatter.php
@@ -74,7 +74,7 @@ public function formatCallerInfo(array $call): string
 
 			$string = rtrim($string, ', ') . ')';
 		}
-		elseif (isset($call['args']))
+		elseif (isset($call['args'][0]))
 		{
 			$string .= htmlspecialchars($call['function']) . ' ' . $call['args'][0];
 		}