diff --git a/gtsam_unstable/nonlinear/ConcurrentBatchSmoother.cpp b/gtsam_unstable/nonlinear/ConcurrentBatchSmoother.cpp
index 87e20cb13..d9c59d0ea 100644
--- a/gtsam_unstable/nonlinear/ConcurrentBatchSmoother.cpp
+++ b/gtsam_unstable/nonlinear/ConcurrentBatchSmoother.cpp
@@ -362,6 +362,7 @@ ConcurrentBatchSmoother::Result ConcurrentBatchSmoother::optimize() {
           } else {
             // Increase lambda and continue searching
             lambda *= parameters_.lambdaFactor;
+          }
         }
       } // end while
     }