diff --git a/lib/zip/input_stream.rb b/lib/zip/input_stream.rb
index 5a9c289f..66ffdd3e 100644
--- a/lib/zip/input_stream.rb
+++ b/lib/zip/input_stream.rb
@@ -153,7 +153,7 @@ def open_entry
         && !@complete_entry
         raise GPFBit3Error,
               'It is not possible to get complete info from the local ' \
-              'header to extract this entry (GP flags bit 3 is set).' \
+              'header to extract this entry (GP flags bit 3 is set). ' \
               'Please use `Zip::File` instead of `Zip::InputStream`.'
       end