diff --git a/src/Illuminate/Http/Middleware/TrustProxies.php b/src/Illuminate/Http/Middleware/TrustProxies.php
index 4b7b0f62b9b1..0d3c747ba6d3 100644
--- a/src/Illuminate/Http/Middleware/TrustProxies.php
+++ b/src/Illuminate/Http/Middleware/TrustProxies.php
@@ -23,6 +23,7 @@ class TrustProxies
                          Request::HEADER_X_FORWARDED_HOST |
                          Request::HEADER_X_FORWARDED_PORT |
                          Request::HEADER_X_FORWARDED_PROTO |
+                         Request::HEADER_X_FORWARDED_PREFIX |
                          Request::HEADER_X_FORWARDED_AWS_ELB;
 
     /**