diff --git a/src/comm.h b/src/comm.h
index 2ab999bab3..817d1230a2 100644
--- a/src/comm.h
+++ b/src/comm.h
@@ -107,8 +107,7 @@ class Comm : protected Pointers {
 
   // partition a global regular grid by proc sub-domains
 
-  void partition_grid(int, int, int, double,
-                      int &, int &, int &, int &, int &, int &);
+  void partition_grid(int, int, int, double, int &, int &, int &, int &, int &, int &);
 
   // memory usage