diff --git a/gtsam/base/Manifold.h b/gtsam/base/Manifold.h
index 1791ff131..6998b3b18 100644
--- a/gtsam/base/Manifold.h
+++ b/gtsam/base/Manifold.h
@@ -81,7 +81,7 @@ struct ManifoldImpl {
 
 /// Extra manifold traits for variable-dimension types
 template<class Class>
-    struct ManifoldImpl<Class, Eigen::Dynamic> {
+struct ManifoldImpl<Class, Eigen::Dynamic> {
   // Run-time dimensionality
   static int GetDimension(const Class& m) {
     return m.dim();