diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 9dc5809614a..52172cc180d 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -2670,6 +2670,17 @@ BOOLEAN WINAPI MmIsAddressValid(PVOID VirtualAddress)
     return !IsBadReadPtr(VirtualAddress, 1);
 }
 
+/***********************************************************************
+ *           MmGetPhysicalAddress   (NTOSKRNL.EXE.@)
+ */
+PHYSICAL_ADDRESS WINAPI MmGetPhysicalAddress(void *virtual_address)
+{
+    PHYSICAL_ADDRESS ret;
+    FIXME("(%p): semi-stub\n", virtual_address);
+    ret.QuadPart = (ULONG_PTR)virtual_address;
+    return ret;
+}
+
 /***********************************************************************
  *           MmMapIoSpace   (NTOSKRNL.EXE.@)
  */
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
index 145ea3099d7..54e8b6cb6cc 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
@@ -701,7 +701,7 @@
 @ stub MmFreeMappingAddress
 @ stdcall MmFreeNonCachedMemory(ptr long)
 @ stub MmFreePagesFromMdl
-@ stub MmGetPhysicalAddress
+@ stdcall MmGetPhysicalAddress(ptr)
 @ stub MmGetPhysicalMemoryRanges
 @ stdcall MmGetSystemRoutineAddress(ptr)
 @ stub MmGetVirtualForPhysical