diff --git a/include/ceres/covariance.h b/include/ceres/covariance.h
index 1e9bb9fdb..6533487a2 100644
--- a/include/ceres/covariance.h
+++ b/include/ceres/covariance.h
@@ -234,6 +234,7 @@ class Covariance {
   };
 
   explicit Covariance(const Options& options);
+  ~Covariance();
 
   // Compute a part of the covariance matrix.
   //
diff --git a/internal/ceres/covariance.cc b/internal/ceres/covariance.cc
index 6cb52eed9..35146c582 100644
--- a/internal/ceres/covariance.cc
+++ b/internal/ceres/covariance.cc
@@ -42,6 +42,9 @@ Covariance::Covariance(const Covariance::Options& options) {
   impl_.reset(new internal::CovarianceImpl(options));
 }
 
+Covariance::~Covariance() {
+}
+
 bool Covariance::Compute(
     const vector<pair<const double*, const double*> >& covariance_blocks,
     Problem* problem) {