diff --git a/Source/Validation.swift b/Source/Validation.swift
index ed37170a3ad297c9215f06b6015f150fd9488ed5..417f5133c5273f63c1202c73c05c5632d87eccb9 100644
--- a/Source/Validation.swift
+++ b/Source/Validation.swift
@@ -117,6 +117,12 @@ extension Request {
                         return true
                     }
                 }
+            } else {
+                for contentType in acceptableContentTypes {
+                    if let MIMEType = MIMEType(contentType) where MIMEType.type == "*" && MIMEType.subtype == "*" {
+                        return true
+                    }
+                }
             }
 
             return false