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-rw-r--r--actionpack/lib/action_dispatch/http/response.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb
index 357ca56036..f71c6afd6c 100644
--- a/actionpack/lib/action_dispatch/http/response.rb
+++ b/actionpack/lib/action_dispatch/http/response.rb
@@ -408,7 +408,7 @@ module ActionDispatch # :nodoc:
def parse_content_type(content_type)
if content_type
type, charset = content_type.split(/;\s*charset=/)
- type = nil if type.empty?
+ type = nil if type && type.empty?
ContentTypeHeader.new(type, charset)
else
NullContentTypeHeader