1 files changed, 2 insertions, 2 deletions
diff --git a/lib/Solver/ValidatingSolver.cpp b/lib/Solver/ValidatingSolver.cpp
index 8e9886d1..e836e8e6 100644
--- a/lib/Solver/ValidatingSolver.cpp
+++ b/lib/Solver/ValidatingSolver.cpp
@@ -38,7 +38,7 @@ public:
                             std::vector<std::vector<unsigned char>> &values,
                             bool &hasSolution);
   SolverRunStatus getOperationStatusCode();
-  char *getConstraintLog(const Query &);
+  std::string getConstraintLog(const Query &) override;
   void setCoreSolverTimeout(time::Span timeout);
 };
 
@@ -134,7 +134,7 @@ SolverImpl::SolverRunStatus ValidatingSolver::getOperationStatusCode() {
   return solver->impl->getOperationStatusCode();
 }
 
-char *ValidatingSolver::getConstraintLog(const Query &query) {
+std::string ValidatingSolver::getConstraintLog(const Query &query) {
   return solver->impl->getConstraintLog(query);
 }