diff --git a/src/USER-MISC/pair_zhou.cpp b/src/USER-MISC/pair_zhou.cpp
index fc5569574c..b4530eca46 100644
--- a/src/USER-MISC/pair_zhou.cpp
+++ b/src/USER-MISC/pair_zhou.cpp
@@ -9,11 +9,13 @@
    the GNU General Public License.
 
    See the README file in the top-level LAMMPS directory.
+  -------------------------------------------------------------------------
+  Contributed by Kristen Fichthorn @ Penn State University
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include "pair_zhou.h"
 #include "atom.h"
 #include "comm.h"
diff --git a/src/USER-MISC/pair_zhou.h b/src/USER-MISC/pair_zhou.h
index e8a4effa78..f0bd2d6022 100644
--- a/src/USER-MISC/pair_zhou.h
+++ b/src/USER-MISC/pair_zhou.h
@@ -9,6 +9,8 @@
    the GNU General Public License.
 
    See the README file in the top-level LAMMPS directory.
+  -------------------------------------------------------------------------
+  Contributed by Kristen Fichthorn @ Penn State University
 ------------------------------------------------------------------------- */
 
 #ifdef PAIR_CLASS