diff --git a/extern/mantaflow/preprocessed/plugin/pressure.cpp b/extern/mantaflow/preprocessed/plugin/pressure.cpp
index 593aeb16859..75118a4402a 100644
--- a/extern/mantaflow/preprocessed/plugin/pressure.cpp
+++ b/extern/mantaflow/preprocessed/plugin/pressure.cpp
@@ -1181,7 +1181,27 @@ void solvePressureSystem(Grid<Real> &rhs,
     gcg->setMGPreconditioner(GridCgInterface::PC_MGP, pmg);
   }
 
+  auto cleanup = [&](){
+    // Cleanup
+    if (gcg)
+      delete gcg;
+    if (pca0)
+      delete pca0;
+    if (pca1)
+      delete pca1;
+    if (pca2)
+      delete pca2;
+    if (pca3)
+      delete pca3;
+
+    // PcMGDynamic: always delete multigrid solver after use
+    // PcMGStatic: keep multigrid solver for next solve
+    if (pmg && preconditioner == PcMGDynamic)
+      releaseMG(parent);
+  };
+
   // CG solve
+  try {
   for (int iter = 0; iter < maxIter; iter++) {
     if (!gcg->iterate())
       iter = maxIter;
@@ -1193,23 +1213,13 @@ void solvePressureSystem(Grid<Real> &rhs,
   debMsg("FluidSolver::solvePressure done. Iterations:" << gcg->getIterations()
                                                         << ", residual:" << gcg->getResNorm(),
          2);
+  }
+  catch (const Manta::Error &e) {
+    cleanup();
+    throw e;
+  }
 
-  // Cleanup
-  if (gcg)
-    delete gcg;
-  if (pca0)
-    delete pca0;
-  if (pca1)
-    delete pca1;
-  if (pca2)
-    delete pca2;
-  if (pca3)
-    delete pca3;
-
-  // PcMGDynamic: always delete multigrid solver after use
-  // PcMGStatic: keep multigrid solver for next solve
-  if (pmg && preconditioner == PcMGDynamic)
-    releaseMG(parent);
+  cleanup();
 }
 static PyObject *_W_2(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
 {