diff --git a/resources/views/blast/welcome.blade.php b/resources/views/blast/welcome.blade.php
index 4e012d92f2703b6d104c0b01aaaff68bacb02c19..e0415bcd4479967863eada41303590949287c149 100755
--- a/resources/views/blast/welcome.blade.php
+++ b/resources/views/blast/welcome.blade.php
@@ -24,7 +24,7 @@
         {{ html()->label('Select the blast task') }}
         {{ html()->select('blasttask', ['blastn-short' => 'blastn-short', 'blastn' => 'blastn', 'tblastn' => 'tblastn'],  'blastn-short') }}
         <br> <br>
-        {{ html()->label('Paste below your query sequence') }}
+        {{ html()->label('Paste below your query sequence (must be at least 7bp-long)') }}
         <br> <br>
         {{ html()->textarea('queryseq', null, ['class' => 'form-control'])->rows(20)->cols(100) }}
     </div>