diff --git a/lib/summarize/summarizeSequence.js b/lib/summarize/summarizeSequence.js
index f70185033..ce564dd06 100644
--- a/lib/summarize/summarizeSequence.js
+++ b/lib/summarize/summarizeSequence.js
@@ -27,7 +27,7 @@ function summarizeSequence (sequence, req, sbol, remote, graphUri) {
     encoding: sequence.encoding.toString(),
     elements: elements,
     formatted: formatSequence(elements),
-    blastUrl: encoding === 'http://www.chem.qmul.ac.uk/iupac/AminoAcid/'
+    blastUrl: encoding === 'AminoAcid'
       ? 'http://blast.ncbi.nlm.nih.gov/Blast.cgi?PROGRAM=blastp&PAGE_TYPE=BlastSearch&LINK_LOC=blasthome'
       : 'http://blast.ncbi.nlm.nih.gov/Blast.cgi?PROGRAM=blastn&PAGE_TYPE=BlastSearch&LINK_LOC=blasthome'
   }