diff --git a/src/KOKKOS/modify_kokkos.cpp b/src/KOKKOS/modify_kokkos.cpp
index 581f6598f1..d0f57df8dc 100644
--- a/src/KOKKOS/modify_kokkos.cpp
+++ b/src/KOKKOS/modify_kokkos.cpp
@@ -394,7 +394,7 @@ void ModifyKokkos::final_integrate()
 
 
 /* ----------------------------------------------------------------------
-   2nd half of integrate call, only for relevant fixes
+   fused initial and final integrate call, only for relevant fixes
 ------------------------------------------------------------------------- */
 
 void ModifyKokkos::fused_integrate()
@@ -900,3 +900,22 @@ int ModifyKokkos::min_reset_ref()
   }
   return itmpall;
 }
+
+/* ----------------------------------------------------------------------
+   check if initial and final integrate can be fused
+------------------------------------------------------------------------- */
+
+int ModifyKokkos::check_fuse_integrate()
+{
+  int fuse_integrate_flag = 1;
+
+  for (int i = 0; i < n_initial_integrate; i++)
+    if (!fix[list_initial_integrate[i]]->fuse_integrate_flag)
+      fuse_integrate_flag = 0;
+
+  for (int i = 0; i < n_final_integrate; i++)
+    if (!fix[list_final_integrate[i]]->fuse_integrate_flag)
+      fuse_integrate_flag = 0;
+
+  return fuse_integrate_flag;
+}
diff --git a/src/KOKKOS/modify_kokkos.h b/src/KOKKOS/modify_kokkos.h
index e440693fbb..8dd9e6d9df 100644
--- a/src/KOKKOS/modify_kokkos.h
+++ b/src/KOKKOS/modify_kokkos.h
@@ -70,6 +70,8 @@ class ModifyKokkos : public Modify {
   int min_dof() override;
   int min_reset_ref() override;
 
+  int check_fuse_integrate();
+
  protected:
 
 };
diff --git a/src/KOKKOS/verlet_kokkos.cpp b/src/KOKKOS/verlet_kokkos.cpp
index 0339df663b..2b70f3db61 100644
--- a/src/KOKKOS/verlet_kokkos.cpp
+++ b/src/KOKKOS/verlet_kokkos.cpp
@@ -27,7 +27,7 @@
 #include "kspace.h"
 #include "output.h"
 #include "update.h"
-#include "modify.h"
+#include "modify_kokkos.h"
 #include "timer.h"
 #include "memory_kokkos.h"
 #include "kokkos.h"
@@ -629,5 +629,5 @@ void VerletKokkos::fuse_check(int i, int n)
   if (i == 0 || i == n-1) fuse_integrate = 0;
   if (update->ntimestep == output->next) fuse_integrate = 0;
   if (timer->has_timeout()) fuse_integrate = 0;
-  if (!modify->check_fuse_integrate()) fuse_integrate = 0;
+  if (!((ModifyKokkos*)modify)->check_fuse_integrate()) fuse_integrate = 0;
 }
diff --git a/src/modify.cpp b/src/modify.cpp
index 71f7cb8889..d0656d3895 100644
--- a/src/modify.cpp
+++ b/src/modify.cpp
@@ -475,17 +475,6 @@ void Modify::final_integrate()
   for (int i = 0; i < n_final_integrate; i++) fix[list_final_integrate[i]]->final_integrate();
 }
 
-
-/* ----------------------------------------------------------------------
-   2nd half of integrate call, only for relevant fixes
-------------------------------------------------------------------------- */
-
-void Modify::fused_integrate()
-{
-  for (int i = 0; i < n_final_integrate; i++)
-    fix[list_final_integrate[i]]->fused_integrate();
-}
-
 /* ----------------------------------------------------------------------
    end-of-timestep call, only for relevant fixes
    only call fix->end_of_step() on timesteps that are multiples of nevery
@@ -1810,22 +1799,3 @@ double Modify::memory_usage()
   for (int i = 0; i < ncompute; i++) bytes += compute[i]->memory_usage();
   return bytes;
 }
-
-/* ----------------------------------------------------------------------
-   check if initial and final integrate can be fused
-------------------------------------------------------------------------- */
-
-int Modify::check_fuse_integrate()
-{
-  int fuse_integrate_flag = 1;
-
-  for (int i = 0; i < n_initial_integrate; i++)
-    if (!fix[list_initial_integrate[i]]->fuse_integrate_flag)
-      fuse_integrate_flag = 0;
-
-  for (int i = 0; i < n_final_integrate; i++)
-    if (!fix[list_final_integrate[i]]->fuse_integrate_flag)
-      fuse_integrate_flag = 0;
-
-  return fuse_integrate_flag;
-}
diff --git a/src/modify.h b/src/modify.h
index da3cab55d2..9686a9a7ec 100644
--- a/src/modify.h
+++ b/src/modify.h
@@ -61,7 +61,7 @@ class Modify : protected Pointers {
   virtual void setup_pre_force(int);
   virtual void setup_pre_reverse(int, int);
   virtual void initial_integrate(int);
-  virtual void fused_integrate();
+  virtual void fused_integrate() {}
   virtual void post_integrate();
   virtual void pre_exchange();
   virtual void pre_neighbor();
@@ -151,8 +151,6 @@ class Modify : protected Pointers {
 
   double memory_usage();
 
-  int check_fuse_integrate();
-
  protected:
   // internal fix counts