diff --git a/mrbgems/mruby-dir/mrbgem.rake b/mrbgems/mruby-dir/mrbgem.rake
index 6951c49db..ed05e14d1 100644
--- a/mrbgems/mruby-dir/mrbgem.rake
+++ b/mrbgems/mruby-dir/mrbgem.rake
@@ -1,4 +1,4 @@
 MRuby::Gem::Specification.new('mruby-dir') do |spec|
   spec.license = 'MIT and MIT-like license'
-  spec.authors = [ 'Internet Initiative Japan Inc.', 'Kevlin Henney']
+  spec.authors = ['Internet Initiative Japan Inc.', 'Kevlin Henney']
 end
diff --git a/mrbgems/mruby-socket/mrbgem.rake b/mrbgems/mruby-socket/mrbgem.rake
index dba00c646..f32f26fcd 100644
--- a/mrbgems/mruby-socket/mrbgem.rake
+++ b/mrbgems/mruby-socket/mrbgem.rake
@@ -1,6 +1,6 @@
 MRuby::Gem::Specification.new('mruby-socket') do |spec|
   spec.license = 'MIT'
-  spec.authors = ['Internet Initiative Japan', 'mruby developers']
+  spec.authors = ['Internet Initiative Japan Inc.', 'mruby developers']
   spec.summary = 'standard socket class'
 
   #spec.cc.defines << "HAVE_SA_LEN=0"