diff --git a/gtsam/inference/BayesTreeCliqueBase-inst.h b/gtsam/inference/BayesTreeCliqueBase-inst.h
index df775557c..dfcc7c318 100644
--- a/gtsam/inference/BayesTreeCliqueBase-inst.h
+++ b/gtsam/inference/BayesTreeCliqueBase-inst.h
@@ -91,7 +91,7 @@ namespace gtsam {
   template<class DERIVED, class FACTORGRAPH>
   size_t BayesTreeCliqueBase<DERIVED, FACTORGRAPH>::numCachedSeparatorMarginals() const
   {
-      std::lock_guard<std::mutex> marginalLock(cachedSeparatorMarginalMutex_);
+    std::lock_guard<std::mutex> marginalLock(cachedSeparatorMarginalMutex_);
     if (!cachedSeparatorMarginal_)
       return 0;
 
diff --git a/gtsam/inference/BayesTreeCliqueBase.h b/gtsam/inference/BayesTreeCliqueBase.h
index be71801b8..7b79ccf68 100644
--- a/gtsam/inference/BayesTreeCliqueBase.h
+++ b/gtsam/inference/BayesTreeCliqueBase.h
@@ -93,7 +93,7 @@ namespace gtsam {
 
     /// This stores the Cached separator marginal P(S)
     mutable boost::optional<FactorGraphType> cachedSeparatorMarginal_;
-    /// This protects Cached seperator marginal P(S) from concurent read/writes
+    /// This protects Cached seperator marginal P(S) from concurrent read/writes
     /// as many the functions which access it are const (hence the mutable)
     /// leading to the false impression that these const functions are thread-safe
     /// which is not true due to these mutable values. This is fixed by applying this mutex.