diff --git a/gtsam/discrete/SignatureParser.h b/gtsam/discrete/SignatureParser.h
index e005da14a..e6b402e44 100644
--- a/gtsam/discrete/SignatureParser.h
+++ b/gtsam/discrete/SignatureParser.h
@@ -47,7 +47,7 @@ namespace gtsam {
  *
  * Also fails if the rows are not of the same size.
  */
-struct GTSAM_EXPORT SignatureParser {
+struct SignatureParser {
   using Row = std::vector<double>;
   using Table = std::vector<Row>;