diff --git a/Changelog.md b/Changelog.md
index a6998d4b7..f2aaee042 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -127,7 +127,8 @@ Contributions are very welcome, the hard work is done!
 ## Refactor
 
 ## Bug fixes
-* Fix empty name field when editing aspect names [#6548](https://github.com/diaspora/diaspora/issues/6548)
+* Fix empty name field when editing aspect names [#6706](https://github.com/diaspora/diaspora/pull/6706)
+* Fix internal server error when trying to log out of an expired session [#6707](https://github.com/diaspora/diaspora/pull/6707)
 
 ## Features
 
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 05016d2a7..61f464209 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -7,6 +7,6 @@ class SessionsController < Devise::SessionsController
   before_filter :reset_authentication_token, :only => [:destroy]
 
   def reset_authentication_token
-    current_user.reset_authentication_token!
+    current_user.reset_authentication_token! unless current_user.nil?
   end
 end
diff --git a/spec/controllers/sessions_controller_spec.rb b/spec/controllers/sessions_controller_spec.rb
index 5b802635c..4ba846ed1 100644
--- a/spec/controllers/sessions_controller_spec.rb
+++ b/spec/controllers/sessions_controller_spec.rb
@@ -47,4 +47,26 @@ describe SessionsController, type: :controller do
       expect(response).to redirect_to root_path
     end
   end
+
+  describe "#reset_authentication_token" do
+    context "for a logged in user" do
+      before do
+        sign_in :user, @user
+      end
+
+      it "succeeds" do
+        expect { @controller.send(:reset_authentication_token) }.to_not raise_error
+      end
+    end
+
+    context "for a logged out user" do
+      before do
+        sign_out :user
+      end
+
+      it "succeeds" do
+        expect { @controller.send(:reset_authentication_token) }.to_not raise_error
+      end
+    end
+  end
 end