diff --git a/lib/savon/wsdl_stream.rb b/lib/savon/wsdl_stream.rb
index 6b6bca7f..cd8b14e6 100644
--- a/lib/savon/wsdl_stream.rb
+++ b/lib/savon/wsdl_stream.rb
@@ -32,7 +32,7 @@ def tag_start(tag, attrs)
 
       if @section == :binding && tag == "binding"
         # ensure that we are in an wsdl/soap namespace
-        @section = nil unless @namespaces[namespace] == "http://schemas.xmlsoap.org/wsdl/soap/"
+        @section = nil unless @namespaces[namespace] =~ /^http:\/\/schemas.xmlsoap.org\/wsdl\/soap/
       end
 
       @section = tag.to_sym if Sections.include?(tag) && depth <= 2