diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index 7f125fae29..7545a27049 100644
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -236,7 +236,7 @@ def sync_default_gems_with_commits(gem, range)
       `git remote add #{gem} git@github.com:#{$repositories[gem.to_sym]}.git`
     end
   end
-  `git fetch #{gem}`
+  `git fetch --no-tags #{gem}`
 
   IO.popen(%W"git log --format=%H,%s #{range}") do |f|
     commits = f.read.split("\n").reverse.map{|commit| commit.split(',')}
@@ -266,7 +266,7 @@ end
 
 def sync_lib(repo)
   unless File.directory?("../#{repo}")
-    abort "Expected '../#{repo}' (#{File.expand_path("../#{repo}")}) to be a directory, but it wasn't."
+    abort %[Expected '../#{repo}' (#{File.expand_path("../#{repo}")}) to be a directory, but it wasn't.]
   end
   rm_rf(["lib/#{repo}.rb", "lib/#{repo}/*", "test/test_#{repo}.rb"])
   cp_r(Dir.glob("../#{repo}/lib/*"), "lib")