diff --git a/Manifest.txt b/Manifest.txt
index 832fdd0e..0ebe2afa 100644
--- a/Manifest.txt
+++ b/Manifest.txt
@@ -20,7 +20,7 @@ examples/webrick_compare.rb
 ext/puma_http11/Http11Service.java
 ext/puma_http11/ext_help.h
 ext/puma_http11/extconf.rb
-ext/puma_http11/http11.c
+ext/puma_http11/puma_http11.c
 ext/puma_http11/http11_parser.c
 ext/puma_http11/http11_parser.h
 ext/puma_http11/http11_parser.java.rl
diff --git a/tasks/gem.rake b/tasks/gem.rake
index 2202c8a8..a9e4cc88 100644
--- a/tasks/gem.rake
+++ b/tasks/gem.rake
@@ -5,7 +5,7 @@ HOE = Hoe.spec 'puma' do
   self.readme_file = "README.md"
   developer 'Evan Phoenix', 'evan@phx.io'
 
-  spec_extras[:extensions] = ["ext/http11/extconf.rb"]
+  spec_extras[:extensions] = ["ext/puma_http11/extconf.rb"]
   spec_extras[:executables] = ['puma']
 
   extra_dev_deps << ['rake-compiler', "~> 0.7.0"]