diff --git a/Src/LinearSolvers/MLMG/AMReX_MLMG.H b/Src/LinearSolvers/MLMG/AMReX_MLMG.H
index e046dc09a0f..1ccba436cf1 100644
--- a/Src/LinearSolvers/MLMG/AMReX_MLMG.H
+++ b/Src/LinearSolvers/MLMG/AMReX_MLMG.H
@@ -473,7 +473,7 @@ MLMGT<MF>::solve (const Vector<AMF*>& a_sol, const Vector<AMF const*>& a_rhs,
                     }
 
                     if ( throw_exception ) {
-                        throw error(std::string("MLMG blew up."));
+                        throw error("MLMG blew up.");
                     } else {
                         amrex::Abort("MLMG failing so lets stop here");
                     }