diff --git a/src/oneD/Sim1D.cpp b/src/oneD/Sim1D.cpp
index 5be6de0c8f..d8dc453b2b 100644
--- a/src/oneD/Sim1D.cpp
+++ b/src/oneD/Sim1D.cpp
@@ -331,10 +331,6 @@ void Sim1D::solve(int loglevel, bool refine_grid)
                 saveResidual("debug_sim1d.xml", "residual",
                              "After regridding");
             }
-            if (new_points < 0) {
-                writelog("Maximum number of grid points reached.");
-                new_points = 0;
-            }
         } else {
             debuglog("grid refinement disabled.\n", loglevel);
             new_points = 0;
diff --git a/src/oneD/refine.cpp b/src/oneD/refine.cpp
index f70fa7395e..c0288542ed 100644
--- a/src/oneD/refine.cpp
+++ b/src/oneD/refine.cpp
@@ -47,8 +47,7 @@ int Refiner::analyze(size_t n, const doublereal* z,
                      const doublereal* x)
 {
     if (n >= m_npmax) {
-        writelog("max number of grid points reached ({}).\n", m_npmax);
-        return -2;
+        throw CanteraError("Refiner::analyze", "max number of grid points reached ({}).", m_npmax);
     }
 
     if (m_domain->nPoints() <= 1) {
@@ -66,7 +65,7 @@ int Refiner::analyze(size_t n, const doublereal* z,
 
     // check consistency
     if (n != m_domain->nPoints()) {
-        throw CanteraError("analyze","inconsistent");
+        throw CanteraError("Refiner::analyze", "inconsistent");
     }
 
     // find locations where cell size ratio is too large.