diff --git a/system/Commands/Utilities/Routes.php b/system/Commands/Utilities/Routes.php
index f8c8092d24d3..fada6d4971ac 100644
--- a/system/Commands/Utilities/Routes.php
+++ b/system/Commands/Utilities/Routes.php
@@ -122,11 +122,14 @@ public function run(array $params)
 
 			foreach ($routes as $from => $to)
 			{
-				$tbody[] = [
-					$from,
-					$method,
-					$to,
-				];
+				// filter for strings, as callbacks aren't displayable
+				if (is_string($to)) {
+					$tbody[] = [
+						$from,
+						$method,
+						$to,
+					];
+				}
 			}
 		}