diff --git a/src/cell.cpp b/src/cell.cpp
index 157d0d1a2c..a60f20fbea 100644
--- a/src/cell.cpp
+++ b/src/cell.cpp
@@ -4,6 +4,7 @@
 #include <sstream>
 #include <set>
 #include <string>
+#include <cctype>
 
 #include "openmc/capi.h"
 #include "openmc/constants.h"
diff --git a/src/initialize.cpp b/src/initialize.cpp
index 8331c30b5d..fd524a2de9 100644
--- a/src/initialize.cpp
+++ b/src/initialize.cpp
@@ -102,7 +102,7 @@ void initialize_mpi(MPI_Comm intracomm)
   // Create bank datatype
   Particle::Bank b;
   MPI_Aint disp[6];
-  MPI_Get_address(c&b.r, &disp[0]);
+  MPI_Get_address(&b.r, &disp[0]);
   MPI_Get_address(&b.u, &disp[1]);
   MPI_Get_address(&b.E, &disp[2]);
   MPI_Get_address(&b.wgt, &disp[3]);