diff --git a/src/finalize.cpp b/src/finalize.cpp
index 633cf2991d..4d93c6c66c 100644
--- a/src/finalize.cpp
+++ b/src/finalize.cpp
@@ -44,7 +44,9 @@ void free_memory()
   free_memory_mesh();
   free_memory_tally();
   free_memory_bank();
-  free_memory_cmfd();
+  if (mpi::master) {
+    free_memory_cmfd();
+  }
 #ifdef DAGMC
   free_memory_dagmc();
 #endif