diff --git a/src/coreclr/inc/jithelpers.h b/src/coreclr/inc/jithelpers.h
index 99a84286242c8f..f03d0ff4914dde 100644
--- a/src/coreclr/inc/jithelpers.h
+++ b/src/coreclr/inc/jithelpers.h
@@ -172,7 +172,7 @@
     DYNAMICJITHELPER(CORINFO_HELP_CHECKED_ASSIGN_REF, RhpCheckedAssignRef,METHOD__NIL)
 
     DYNAMICJITHELPER(CORINFO_HELP_BULK_WRITEBARRIER, NULL, METHOD__BUFFER__MEMCOPYGC)
-    DYNAMICJITHELPER_NOINDIRECT(CORINFO_HELP_BULK_WRITEBARRIER_SMALL, NULL, METHOD__BUFFER__MEMCOPYGC_SMALL)
+    JITHELPER(CORINFO_HELP_BULK_WRITEBARRIER_SMALL, Buffer::BulkMoveWithWriteBarrier, METHOD__NIL)
 
     // Accessing fields
 
diff --git a/src/coreclr/vm/corelib.h b/src/coreclr/vm/corelib.h
index 62fb4613954f1f..1a64498519ac45 100644
--- a/src/coreclr/vm/corelib.h
+++ b/src/coreclr/vm/corelib.h
@@ -1064,7 +1064,6 @@ DEFINE_CLASS(BUFFER,                System,                 Buffer)
 DEFINE_METHOD(BUFFER,               MEMCPY_PTRBYTE_ARRBYTE, Memcpy,                 SM_PtrByte_Int_ArrByte_Int_Int_RetVoid)
 DEFINE_METHOD(BUFFER,               MEMCPY,                 Memcpy,                 SM_PtrByte_PtrByte_Int_RetVoid)
 DEFINE_METHOD(BUFFER,               MEMCOPYGC,              BulkMoveWithWriteBarrier, SM_RefByte_RefByte_UIntPtr_RetVoid)
-DEFINE_METHOD(BUFFER,               MEMCOPYGC_SMALL,        BulkMoveWithWriteBarrierInternal, SM_RefByte_RefByte_UIntPtr_RetVoid)
 
 DEFINE_CLASS(STUBHELPERS,           StubHelpers,            StubHelpers)
 #ifdef FEATURE_COMINTEROP
diff --git a/src/coreclr/vm/jithelpers.cpp b/src/coreclr/vm/jithelpers.cpp
index 9fb22730713b6b..1f1b7364a12462 100644
--- a/src/coreclr/vm/jithelpers.cpp
+++ b/src/coreclr/vm/jithelpers.cpp
@@ -24,6 +24,7 @@
 #include "eeprofinterfaces.h"
 #include "dynamicinterfacecastable.h"
 #include "comsynchronizable.h"
+#include "comutilnative.h"
 
 #ifndef TARGET_UNIX
 // Included for referencing __report_gsfailure