1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Solver/QueryLoggingSolver.h b/lib/Solver/QueryLoggingSolver.h
index 8149342f..0c975276 100644
--- a/lib/Solver/QueryLoggingSolver.h
+++ b/lib/Solver/QueryLoggingSolver.h
@@ -71,7 +71,7 @@ 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);
 };