diff --git a/plugins/system/debug/debug.php b/plugins/system/debug/debug.php
index fdfae081654bd..4eeea482e4c57 100644
--- a/plugins/system/debug/debug.php
+++ b/plugins/system/debug/debug.php
@@ -637,6 +637,8 @@ protected function displayProfileInformation()
 		$totalTime = 0;
 		$totalMem  = 0;
 		$marks     = array();
+		$bars      = array();
+		$barsMem   = array();
 
 		foreach (JProfiler::getInstance('Application')->getMarks() as $mark)
 		{
@@ -662,8 +664,8 @@ protected function displayProfileInformation()
 			);
 		}
 
-		$avgTime = $totalTime / count($marks);
-		$avgMem  = $totalMem / count($marks);
+		$avgTime = $totalTime / max(count($marks), 1);
+		$avgMem  = $totalMem / max(count($marks), 1);
 
 		foreach ($marks as $mark)
 		{