diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 00d93a21bd5..4a5ac16b7ef 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -4016,3 +4016,14 @@ PVOID WINAPI PsGetProcessWow64Process(PEPROCESS process)
     FIXME("stub: %p\n", process);
     return NULL;
 }
+
+/*********************************************************************
+ *           MmCopyVirtualMemory    (NTOSKRNL.@)
+ */
+NTSTATUS WINAPI MmCopyVirtualMemory(PEPROCESS fromprocess, PVOID fromaddress, PEPROCESS toprocess,
+                                    PVOID toaddress, SIZE_T bufsize, KPROCESSOR_MODE mode,
+                                    PSIZE_T copied)
+{
+    FIXME("stub: %p %p %p %p %lu %d %p\n", fromprocess, fromaddress, toprocess, toaddress, bufsize, mode, copied);
+    return STATUS_NOT_IMPLEMENTED;
+}
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 3e8315c11a2..76d8fb34a41 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -668,6 +668,7 @@
 @ stub MmBuildMdlForNonPagedPool
 @ stub MmCanFileBeTruncated
 @ stub MmCommitSessionMappedView
+@ stdcall MmCopyVirtualMemory(ptr ptr ptr ptr long long ptr)
 @ stub MmCreateMdl
 @ stdcall MmCreateSection(ptr long ptr ptr long long long ptr)
 @ stub MmDisableModifiedWriteOfSection