diff --git a/spec/auth_token_spec.rb b/spec/auth_token_spec.rb
index f9358051..17c7fa4c 100644
--- a/spec/auth_token_spec.rb
+++ b/spec/auth_token_spec.rb
@@ -58,11 +58,11 @@
     it "should raise if key is not provided" do
       Cloudinary.config.auth_token[:key] = nil
       token = { :expiration => 111111, :duration => 0 }
-      expect{Cloudinary::Utils.generate_auth_token(token)}.to raise_error
+      expect{Cloudinary::Utils.generate_auth_token(token)}.to raise_error(/Missing auth token key configuration/)
     end
     it "should raise if expiration and duration are not provided" do
       token = { :key => KEY, :expiration => 0, :duration => 0 }
-      expect{Cloudinary::Utils.generate_auth_token(token)}.to raise_error
+      expect{Cloudinary::Utils.generate_auth_token(token)}.to raise_error(/Must provide either expiration or duration/)
     end
   end
   describe "authentication token" do
diff --git a/spec/cloudinary_helper_spec.rb b/spec/cloudinary_helper_spec.rb
index 32ebb905..5d653d60 100644
--- a/spec/cloudinary_helper_spec.rb
+++ b/spec/cloudinary_helper_spec.rb
@@ -163,7 +163,7 @@ def reset_metadata
 
     after :each do
       Cloudinary.config.static_image_support = @static_support
-      Cloudinary::Static::METADATA_FILE = @static_file
+      Kernel::silence_warnings { Cloudinary::Static::METADATA_FILE = @static_file }
       Cloudinary::Static.reset_metadata
     end
 
@@ -175,7 +175,7 @@ def reset_metadata
         Cloudinary.config.static_image_support = false
         expect(helper.image_path('/images/foo.jpg')).to eq('/images/foo.jpg')
         expect(helper.image_path('some-folder/foo.gif')).to eq("/images/some-folder/foo.gif")
-        Cloudinary::Static::METADATA_FILE = "spec/sample_asset_file.tsv"
+        Kernel::silence_warnings { Cloudinary::Static::METADATA_FILE = "spec/sample_asset_file.tsv"}
         Cloudinary::Static.reset_metadata
         expect(helper.image_path('/images/foo.jpg'))
             .to eq("/images/foo.jpg")