diff --git a/spec/factories.rb b/spec/factories.rb
index d2e9f48c..17dbc796 100644
--- a/spec/factories.rb
+++ b/spec/factories.rb
@@ -148,6 +148,12 @@ FactoryGirl.define do
         "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAiPWx6WM4lhHNedGfBpPJNPpZ7yKu+dnn1SJejgt4596k6YjzGGphH2TUxwKzxcKDKKezwkpfnxPkSMkuEspGRt/aZZ9wa ++Oi7Qkr8prgHc4soW6NUlfDzpvZK2H5E7eQaSeP3SAwGmQKUFHCddNaP0L+hM7zhFNzjFvpaMgJw0="
       end
     end
+
+    factory :invalid_key do
+      key do
+        "ssh-rsa this_is_invalid_key=="
+      end
+    end
   end
 
   factory :milestone do
diff --git a/spec/factories_spec.rb b/spec/factories_spec.rb
index 5ee73546..8360477d 100644
--- a/spec/factories_spec.rb
+++ b/spec/factories_spec.rb
@@ -1,6 +1,9 @@
 require 'spec_helper'
 
-INVALID_FACTORIES = [:key_with_a_space_in_the_middle]
+INVALID_FACTORIES = [
+    :key_with_a_space_in_the_middle,
+    :invalid_key,
+]
 
 FactoryGirl.factories.map(&:name).each do |factory_name|
   next if INVALID_FACTORIES.include?(factory_name)
diff --git a/spec/models/key_spec.rb b/spec/models/key_spec.rb
index 94b952cf..a9ab2f05 100644
--- a/spec/models/key_spec.rb
+++ b/spec/models/key_spec.rb
@@ -73,8 +73,12 @@ describe Key do
       build(:key, user: user).should be_valid
     end
 
-    it "rejects the unfingerprintable key" do
+    it "rejects the unfingerprintable key (contains space in middle)" do
       build(:key_with_a_space_in_the_middle).should_not be_valid
     end
+
+    it "rejects the unfingerprintable key (not a key)" do
+      build(:invalid_key).should_not be_valid
+    end
   end
 end