8 files changed, 17 insertions, 1 deletions
diff --git a/lib/gitlab/sherlock/collection.rb b/lib/gitlab/sherlock/collection.rb
index 66bd6258521..ce3a376cf75 100644
--- a/lib/gitlab/sherlock/collection.rb
+++ b/lib/gitlab/sherlock/collection.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     # A collection of transactions recorded by Sherlock.
diff --git a/lib/gitlab/sherlock/file_sample.rb b/lib/gitlab/sherlock/file_sample.rb
index 89072b01f2e..604b6df12cc 100644
--- a/lib/gitlab/sherlock/file_sample.rb
+++ b/lib/gitlab/sherlock/file_sample.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     class FileSample
diff --git a/lib/gitlab/sherlock/line_profiler.rb b/lib/gitlab/sherlock/line_profiler.rb
index b5f9d040047..209ba784f9c 100644
--- a/lib/gitlab/sherlock/line_profiler.rb
+++ b/lib/gitlab/sherlock/line_profiler.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     # Class for profiling code on a per line basis.
diff --git a/lib/gitlab/sherlock/line_sample.rb b/lib/gitlab/sherlock/line_sample.rb
index eb1948eb6d6..c92fa9ea1ff 100644
--- a/lib/gitlab/sherlock/line_sample.rb
+++ b/lib/gitlab/sherlock/line_sample.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     class LineSample
diff --git a/lib/gitlab/sherlock/location.rb b/lib/gitlab/sherlock/location.rb
index 5ac265618ad..4bba60f3490 100644
--- a/lib/gitlab/sherlock/location.rb
+++ b/lib/gitlab/sherlock/location.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     class Location
diff --git a/lib/gitlab/sherlock/middleware.rb b/lib/gitlab/sherlock/middleware.rb
index 4c88e33699a..747cb0f9142 100644
--- a/lib/gitlab/sherlock/middleware.rb
+++ b/lib/gitlab/sherlock/middleware.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     # Rack middleware used for tracking request metrics.
diff --git a/lib/gitlab/sherlock/query.rb b/lib/gitlab/sherlock/query.rb
index 02ddc3f47eb..11561eec32a 100644
--- a/lib/gitlab/sherlock/query.rb
+++ b/lib/gitlab/sherlock/query.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     class Query
@@ -48,7 +50,7 @@ module Gitlab
         end
 
         unless @query.end_with?(';')
-          @query += ';'
+          @query = "#{@query};"
         end
       end
 
diff --git a/lib/gitlab/sherlock/transaction.rb b/lib/gitlab/sherlock/transaction.rb
index 400a552bf99..d04624977dc 100644
--- a/lib/gitlab/sherlock/transaction.rb
+++ b/lib/gitlab/sherlock/transaction.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Sherlock
     class Transaction