1 files changed, 1 insertions, 1 deletions
diff --git a/extern/mantaflow/preprocessed/conjugategrad.cpp b/extern/mantaflow/preprocessed/conjugategrad.cpp
index de522d0b8f4..da82a412a97 100644
--- a/extern/mantaflow/preprocessed/conjugategrad.cpp
+++ b/extern/mantaflow/preprocessed/conjugategrad.cpp
@@ -688,7 +688,7 @@ static PyObject *_W_0(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
     FluidSolver *parent = _args.obtainParent();
     bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
     pbPreparePlugin(parent, "cgSolveDiffusion", !noTiming);
-    PyObject *_retval = 0;
+    PyObject *_retval = nullptr;
     {
       ArgLocker _lock;
       const FlagGrid &flags = *_args.getPtr<FlagGrid>("flags", 0, &_lock);