diff --git a/src/REPLICA/fix_hyper_local.cpp b/src/REPLICA/fix_hyper_local.cpp
index e57419022c..da444bc451 100644
--- a/src/REPLICA/fix_hyper_local.cpp
+++ b/src/REPLICA/fix_hyper_local.cpp
@@ -164,7 +164,7 @@ FixHyperLocal::FixHyperLocal(LAMMPS *lmp, int narg, char **arg) :
   maxbondperatom = FCCBONDS;
   numcoeff = NULL;
   clist = NULL;
-  cpage = new MyPage<OneCoeff>;
+  cpage = new MyPage<HyperOneCoeff>;
   cpage->init(maxbondperatom,1024*maxbondperatom,1);
 
   // set comm sizes needed by this fix
@@ -976,7 +976,7 @@ void FixHyperLocal::build_bond_list(int natom)
     memory->sfree(clist);
     maxcoeff = atom->nmax;
     memory->create(numcoeff,maxcoeff,"hyper/local:numcoeff");
-    clist = (OneCoeff **) memory->smalloc(maxcoeff*sizeof(OneCoeff *),
+    clist = (HyperOneCoeff **) memory->smalloc(maxcoeff*sizeof(HyperOneCoeff *),
                                          "hyper/local:clist");
   }
 
@@ -1741,7 +1741,7 @@ double FixHyperLocal::memory_usage()
   bytes += 2*maxall * sizeof(double);             // maxstrain,maxstrain_domain
   if (checkbias) bytes += maxall * sizeof(tagint);  // biasflag
   bytes += maxcoeff * sizeof(int);                // numcoeff
-  bytes += maxcoeff * sizeof(OneCoeff *);         // clist
-  bytes += maxlocal*maxbondperatom * sizeof(OneCoeff);  // cpage estimate
+  bytes += maxcoeff * sizeof(HyperOneCoeff *);         // clist
+  bytes += maxlocal*maxbondperatom * sizeof(HyperOneCoeff);  // cpage estimate
   return bytes;
 }
diff --git a/src/REPLICA/fix_hyper_local.h b/src/REPLICA/fix_hyper_local.h
index 4fb54d166c..aa3f050bb9 100644
--- a/src/REPLICA/fix_hyper_local.h
+++ b/src/REPLICA/fix_hyper_local.h
@@ -23,6 +23,8 @@ FixStyle(hyper/local,FixHyperLocal)
 #include "fix_hyper.h"
 
 namespace LAMMPS_NS {
+  // forward declaration. struct HyperOneCoeff is defined in my_page.h
+  struct HyperOneCoeff;
 
 class FixHyperLocal : public FixHyper {
  public:
@@ -183,13 +185,8 @@ class FixHyperLocal : public FixHyper {
 
   // data structs for persisting bias coeffs when bond list is reformed
 
-  struct OneCoeff {
-    double biascoeff;
-    tagint tag;
-  };
-
-  MyPage<OneCoeff> *cpage;     // pages of OneCoeff datums for clist
-  OneCoeff **clist;            // ptrs to vectors of bias coeffs for each atom
+  MyPage<HyperOneCoeff> *cpage;// pages of OneCoeff datums for clist
+  HyperOneCoeff **clist;       // ptrs to vectors of bias coeffs for each atom
   int *numcoeff;               // # of bias coeffs per atom (one per bond)
   int maxcoeff;                // allocate sized of clist and numcoeff
 
diff --git a/src/my_page.cpp b/src/my_page.cpp
index bf636bd93d..6b4372b38b 100644
--- a/src/my_page.cpp
+++ b/src/my_page.cpp
@@ -257,12 +257,11 @@ void MyPage<T>::allocate() {
 }
 
 // explicit instantiations
-#include "fix.h"
-#include "REPLICA/fix_hyper_local.h"
+
 namespace LAMMPS_NS {
   template class MyPage<int>;
   template class MyPage<long>;
   template class MyPage<long long>;
   template class MyPage<double>;
-  template class MyPage<FixHyperLocal::OneCoeff>;
+  template class MyPage<HyperOneCoeff>;
 }
diff --git a/src/my_page.h b/src/my_page.h
index 02135b204c..1f40eb48cf 100644
--- a/src/my_page.h
+++ b/src/my_page.h
@@ -22,8 +22,15 @@
 #define LAMMPS_MEMALIGN 64
 #endif
 
+#include "lmptype.h"
+
 namespace LAMMPS_NS {
 
+struct HyperOneCoeff {
+  double biascoeff;
+  tagint tag;
+};
+
 template<class T>
 class MyPage {
  public: