diff --git a/spec/dummy/spec/rake/assets_precompile_rake_spec.rb b/spec/dummy/spec/rake/assets_precompile_rake_spec.rb
index 9c03ce3aa5..8957e25e17 100644
--- a/spec/dummy/spec/rake/assets_precompile_rake_spec.rb
+++ b/spec/dummy/spec/rake/assets_precompile_rake_spec.rb
@@ -8,6 +8,7 @@
   it "doesn't show deprecation message for using webpacker:clean task" do
     allow(ENV).to receive(:[]).with(anything).and_call_original
     allow(ENV).to receive(:[]).with("SHAKAPACKER_PRECOMPILE").and_return("false")
+    allow(ENV).to receive(:[]).with("WEBPACKER_PRECOMPILE").and_return("false")
 
     Rails.application.load_tasks
 
diff --git a/spec/dummy/spec/rake/assets_rake_spec.rb b/spec/dummy/spec/rake/assets_rake_spec.rb
index 000af74c80..6d2f798fa6 100644
--- a/spec/dummy/spec/rake/assets_rake_spec.rb
+++ b/spec/dummy/spec/rake/assets_rake_spec.rb
@@ -35,7 +35,7 @@ def self.call
 
     Rake::Task["react_on_rails:assets:webpack"].execute
 
-    expect(BuildProductionCommand).to have_received(:call)
+    expect(BuildProductionCommand).to have_received(:call).twice
     expect(File).to exist(filepath)
   end