diff --git a/gtsam/nonlinear/ISAM2.cpp b/gtsam/nonlinear/ISAM2.cpp
index 92b23f232..53d0ed0ff 100644
--- a/gtsam/nonlinear/ISAM2.cpp
+++ b/gtsam/nonlinear/ISAM2.cpp
@@ -548,8 +548,7 @@ boost::shared_ptr<FastSet<Index> > ISAM2::recalculate(const FastSet<Index>& mark
 /* ************************************************************************* */
 ISAM2Result ISAM2::update(
     const NonlinearFactorGraph& newFactors, const Values& newTheta, const FastVector<size_t>& removeFactorIndices,
-    const boost::optional<FastMap<Key,int> >& constrainedKeys,
-    const boost::optional<FastList<Key> >& noRelinKeys, bool force_relinearize) {
+    const boost::optional<FastMap<Key,int> >& constrainedKeys, const boost::optional<FastList<Key> >& noRelinKeys, bool force_relinearize) {
 
   const bool debug = ISDEBUG("ISAM2 update");
   const bool verbose = ISDEBUG("ISAM2 update verbose");
diff --git a/gtsam/nonlinear/ISAM2.h b/gtsam/nonlinear/ISAM2.h
index 7e31fd8b9..3e74c9767 100644
--- a/gtsam/nonlinear/ISAM2.h
+++ b/gtsam/nonlinear/ISAM2.h
@@ -485,9 +485,7 @@ protected:
   mutable GaussianFactorGraph linearFactors_;
 
   /** The current elimination ordering Symbols to Index (integer) keys.
-   *
-   * We keep it up to date as we add and reorder variables.
-   */
+   * We keep it up to date as we add and reorder variables. */
   Ordering ordering_;
 
   /** The current parameters */