diff --git a/src/tidyUpSequenceData.js b/src/tidyUpSequenceData.js
index 0575b43..2d7da3c 100644
--- a/src/tidyUpSequenceData.js
+++ b/src/tidyUpSequenceData.js
@@ -93,7 +93,7 @@ module.exports = function tidyUpSequenceData(pSeqData, options = {}) {
 
     seqData.circular == -1 ||
     /* eslint-enable eqeqeq*/
-
+    seqData.circular === false ||
     (!seqData.circular && seqData.sequenceTypeCode !== "CIRCULAR_DNA")
   ) {
     seqData.circular = false;