diff --git a/spec/lib/gitlab/email/receiver_spec.rb b/spec/lib/gitlab/email/receiver_spec.rb
index a6f682a2711..af44c1242ed 100644
--- a/spec/lib/gitlab/email/receiver_spec.rb
+++ b/spec/lib/gitlab/email/receiver_spec.rb
@@ -2,8 +2,7 @@ require "spec_helper"
 
 describe Gitlab::Email::Receiver do
   before do
-    allow(Gitlab.config.reply_by_email).to receive(:enabled).and_return(true)
-    allow(Gitlab.config.reply_by_email).to receive(:address).and_return("reply+%{reply_key}@appmail.adventuretime.ooo")
+    stub_reply_by_email_setting(enabled: true, address: "reply+%{reply_key}@appmail.adventuretime.ooo")
   end
 
   let(:reply_key) { "59d8df8370b7e95c5a49fbf86aeb2c93" }
diff --git a/spec/lib/gitlab/reply_by_email_spec.rb b/spec/lib/gitlab/reply_by_email_spec.rb
index a52af51e97c..a678c7e1a76 100644
--- a/spec/lib/gitlab/reply_by_email_spec.rb
+++ b/spec/lib/gitlab/reply_by_email_spec.rb
@@ -4,12 +4,12 @@ describe Gitlab::ReplyByEmail do
   describe "self.enabled?" do
     context "when reply by email is enabled" do
       before do
-        allow(Gitlab.config.reply_by_email).to receive(:enabled).and_return(true)
+        stub_reply_by_email_setting(enabled: true)
       end
 
       context "when the address is valid" do
         before do
-          allow(Gitlab.config.reply_by_email).to receive(:address).and_return("replies+%{reply_key}@example.com")
+          stub_reply_by_email_setting(address: "replies+%{reply_key}@example.com")
         end
 
         it "returns true" do
@@ -19,7 +19,7 @@ describe Gitlab::ReplyByEmail do
 
       context "when the address is invalid" do
         before do
-          allow(Gitlab.config.reply_by_email).to receive(:address).and_return("replies@example.com")
+          stub_reply_by_email_setting(address: "replies@example.com")
         end
 
         it "returns false" do
@@ -30,7 +30,7 @@ describe Gitlab::ReplyByEmail do
 
     context "when reply by email is disabled" do
       before do
-        allow(Gitlab.config.reply_by_email).to receive(:enabled).and_return(false)
+        stub_reply_by_email_setting(enabled: false)
       end
 
       it "returns false" do
@@ -66,7 +66,7 @@ describe Gitlab::ReplyByEmail do
 
   context "self.reply_address" do
     before do
-      allow(Gitlab.config.reply_by_email).to receive(:address).and_return("replies+%{reply_key}@example.com")
+      stub_reply_by_email_setting(address: "replies+%{reply_key}@example.com")
     end
 
     it "returns the address with an interpolated reply key" do
@@ -76,7 +76,7 @@ describe Gitlab::ReplyByEmail do
 
   context "self.reply_key_from_address" do
     before do
-      allow(Gitlab.config.reply_by_email).to receive(:address).and_return("replies+%{reply_key}@example.com")
+      stub_reply_by_email_setting(address: "replies+%{reply_key}@example.com")
     end
 
     it "returns reply key" do
diff --git a/spec/support/stub_configuration.rb b/spec/support/stub_configuration.rb
index e4004ec8f79..ef3a120d44a 100644
--- a/spec/support/stub_configuration.rb
+++ b/spec/support/stub_configuration.rb
@@ -17,6 +17,10 @@ module StubConfiguration
     allow(Gitlab.config.gravatar).to receive_messages(messages)
   end
 
+  def stub_reply_by_email_setting(messages)
+    allow(Gitlab.config.reply_by_email).to receive_messages(messages)
+  end
+
   private
 
   # Modifies stubbed messages to also stub possible predicate versions