diff --git a/lib/capybara/queries/text_query.rb b/lib/capybara/queries/text_query.rb
index af1d1ff5..a1bf6797 100644
--- a/lib/capybara/queries/text_query.rb
+++ b/lib/capybara/queries/text_query.rb
@@ -70,7 +70,7 @@ module Capybara
             invisible_text = text(@node, :all)
             invisible_count = invisible_text.scan(@search_regexp).size
             if invisible_count != @count
-              details_message << ". it was found #{invisible_count} #{Capybara::Helpers.declension("time", "times", invisible_count)} including non-visible text"
+              details_message << "it was found #{invisible_count} #{Capybara::Helpers.declension("time", "times", invisible_count)} including non-visible text"
             end
           rescue
             # An error getting the non-visible text (if element goes out of scope) should not affect the response
diff --git a/lib/capybara/spec/session/assert_text.rb b/lib/capybara/spec/session/assert_text.rb
index 8cef1e18..7bd2a01c 100644
--- a/lib/capybara/spec/session/assert_text.rb
+++ b/lib/capybara/spec/session/assert_text.rb
@@ -52,6 +52,14 @@ Capybara::SpecHelper.spec '#assert_text' do
     end.to raise_error(Capybara::ExpectationNotMet, /it was found 1 time using a case insensitive search/)
   end
 
+  it "should raise error with helpful message if requested text is present but invisible and with incorrect case", requires: [:js] do
+    @session.visit('/with_html')
+    el = @session.find(:css, '#uppercase')
+    expect do
+      el.assert_text('text here')
+    end.to raise_error(Capybara::ExpectationNotMet, /it was found 1 time using a case insensitive search and it was found 1 time including non-visible text/)
+  end
+
   it "should raise the correct error if requested text is missing but contains regex special characters" do
     @session.visit('/with_html')
     expect do
diff --git a/lib/capybara/spec/views/with_html.erb b/lib/capybara/spec/views/with_html.erb
index e8da0b3d..94d0256e 100644
--- a/lib/capybara/spec/views/with_html.erb
+++ b/lib/capybara/spec/views/with_html.erb
@@ -122,6 +122,10 @@ banana</textarea>
   <a id="link_blank_href" href="">Blank href</a>
 </div>
 
+<div id="uppercase" style="text-transform: uppercase;">
+  text here
+</div>
+
 <div id="ancestor3">
   Ancestor
   <div id="ancestor2">