diff --git a/.clang-tidy b/.clang-tidy
index 4caf530aee..a142355fc4 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -12,6 +12,12 @@ CheckOptions:
 
   - key: misc-include-cleaner.IgnoreHeaders
     value: 'petsc.*\.h;mpi\.h'
+
+  - key: readability-qualified-auto.IgnoreAliasing
+    value: 'false'
+
+  - key: readability-qualified-auto.AllowedTypes
+    value: 'MPI_Comm'
 ---
 
 Disabled checks and reasons:
diff --git a/src/invert/laplacexy/impls/petsc/laplacexy-petsc.cxx b/src/invert/laplacexy/impls/petsc/laplacexy-petsc.cxx
index a116d78475..04abecfe05 100644
--- a/src/invert/laplacexy/impls/petsc/laplacexy-petsc.cxx
+++ b/src/invert/laplacexy/impls/petsc/laplacexy-petsc.cxx
@@ -84,7 +84,7 @@ LaplaceXYpetsc::LaplaceXYpetsc(Mesh* m, Options* opt, const CELL_LOC loc)
   default_prefix = opt->name();
 
   // Get MPI communicator
-  auto* comm = BoutComm::get();
+  auto comm = BoutComm::get();
 
   // Local size
   const int localN = localSize();