diff --git a/gtsam/geometry/SO3.h b/gtsam/geometry/SO3.h
index e9d257acb..3b27d45c5 100644
--- a/gtsam/geometry/SO3.h
+++ b/gtsam/geometry/SO3.h
@@ -33,7 +33,7 @@ namespace gtsam {
  *  We guarantee (all but first) constructors only generate from sub-manifold.
  *  However, round-off errors in repeated composition could move off it...
  */
-class GTSAM_EXPORT SO3: public Matrix3, public LieGroup<SO3, 3> {
+class SO3: public Matrix3, public LieGroup<SO3, 3> {
 
 protected: