diff --git a/lib/savon/soap/fault.rb b/lib/savon/soap/fault.rb
index 421c6287..a9a37171 100644
--- a/lib/savon/soap/fault.rb
+++ b/lib/savon/soap/fault.rb
@@ -19,7 +19,7 @@ def initialize(http)
 
       # Returns whether a SOAP fault is present.
       def present?
-        @present ||= http.body =~ /<(.+:)?Body>(\s*)<(.+:)?Fault>/
+        @present ||= http.body[0,1000] =~ /<(.+:)?Body>(\s*)<(.+:)?Fault>/
       end
 
       # Returns the SOAP fault message.