X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5881feb407af2d4e5785ad57232cc3bfd12b86ec..7e112cd7504e7e379604e2b1fd46b53054a24050:/services/api/app/models/blob.rb

diff --git a/services/api/app/models/blob.rb b/services/api/app/models/blob.rb
index 56cdfb83a4..34600d7a25 100644
--- a/services/api/app/models/blob.rb
+++ b/services/api/app/models/blob.rb
@@ -90,7 +90,7 @@ class Blob
     if !timestamp
       raise Blob::InvalidSignatureError.new 'No signature provided.'
     end
-    if !timestamp.match /^[\da-f]+$/
+    unless timestamp =~ /^[\da-f]+$/
       raise Blob::InvalidSignatureError.new 'Timestamp is not a base16 number.'
     end
     if timestamp.to_i(16) < (opts[:now] or db_current_time.to_i)