diff --git a/lib/twine/placeholders.rb b/lib/twine/placeholders.rb
index 611f831..fc88ae8 100644
--- a/lib/twine/placeholders.rb
+++ b/lib/twine/placeholders.rb
@@ -2,7 +2,8 @@ module Twine
   module Placeholders
     extend self
 
-    PLACEHOLDER_FLAGS_WIDTH_PRECISION_LENGTH = '([-+ 0#])?(\d+|\*)?(\.(\d+|\*))?(hh?|ll?|L|z|j|t)?'
+    # Note: the ` ` (single space) flag is NOT supported
+    PLACEHOLDER_FLAGS_WIDTH_PRECISION_LENGTH = '([-+0#])?(\d+|\*)?(\.(\d+|\*))?(hh?|ll?|L|z|j|t)?'
     PLACEHOLDER_PARAMETER_FLAGS_WIDTH_PRECISION_LENGTH = '(\d+\$)?' + PLACEHOLDER_FLAGS_WIDTH_PRECISION_LENGTH
 
     # http://developer.android.com/guide/topics/resources/string-resource.html#FormattingAndStyling
diff --git a/test/test_placeholders.rb b/test/test_placeholders.rb
index f88e9d1..55d0f02 100644
--- a/test/test_placeholders.rb
+++ b/test/test_placeholders.rb
@@ -11,7 +11,7 @@ class PlaceholderTest < TwineTest
     lucky = lambda { rand > 0.5 }
     placeholder = '%'
     placeholder += (rand * 20).to_i.to_s + '$' if lucky.call
-    placeholder += '-+ 0#'.chars.to_a.sample if lucky.call
+    placeholder += '-+0#'.chars.to_a.sample if lucky.call
     placeholder += (0.upto(20).map(&:to_s) << "*").sample if lucky.call
     placeholder += '.' + (0.upto(20).map(&:to_s) << "*").sample if lucky.call
     placeholder += %w(h hh l ll L z j t).sample if lucky.call
@@ -39,6 +39,11 @@ class PlaceholderTest < TwineTest
       assert_equal "some % value", to_android("some % value")
     end
 
+    def test_does_not_modify_single_percent_signs_when_followed_by_space_and_format_letter
+      # Said differently: formartter parser should not recognize %a in "70% and"
+      assert_equal 'If 70% and 30% dog 80% end', to_android('If 70% and 30% dog 80% end')
+    end
+
     def test_escapes_single_percent_signs_if_placeholder_present
       assert_starts_with "some %% v", to_android("some % value #{placeholder}")
     end