1 files changed, 1 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb b/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb
index e5d100b51b..3c560903f7 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb
@@ -32,7 +32,6 @@ module ActiveRecord
       # Enable the query cache within the block.
       def cache
         old, @query_cache_enabled = @query_cache_enabled, true
-        @query_cache ||= {}
         yield
       ensure
         clear_query_cache
@@ -54,7 +53,7 @@ module ActiveRecord
       # the same SQL query and repeatedly return the same result each time, silently
       # undermining the randomness you were expecting.
       def clear_query_cache
-        @query_cache.clear if @query_cache
+        @query_cache.clear
       end
 
       def select_all_with_query_cache(*args)