diff --git a/gtsam/nonlinear/BatchFixedLagSmoother.h b/gtsam/nonlinear/BatchFixedLagSmoother.h
index e5464896e..8dde520a7 100644
--- a/gtsam/nonlinear/BatchFixedLagSmoother.h
+++ b/gtsam/nonlinear/BatchFixedLagSmoother.h
@@ -26,7 +26,7 @@
 
 namespace gtsam {
 
-class GTSAM_UNSTABLE_EXPORT BatchFixedLagSmoother : public FixedLagSmoother {
+class GTSAM_EXPORT BatchFixedLagSmoother : public FixedLagSmoother {
 
 public:
 
diff --git a/gtsam/nonlinear/FixedLagSmoother.h b/gtsam/nonlinear/FixedLagSmoother.h
index 4272e011f..cb657f141 100644
--- a/gtsam/nonlinear/FixedLagSmoother.h
+++ b/gtsam/nonlinear/FixedLagSmoother.h
@@ -30,7 +30,7 @@
 
 namespace gtsam {
 
-class GTSAM_UNSTABLE_EXPORT FixedLagSmoother {
+class GTSAM_EXPORT FixedLagSmoother {
 
 public: