diff --git a/ntoskrnl/include/ntoskrnl.h b/ntoskrnl/include/ntoskrnl.h
index 643562e60f0..6f2f5379bec 100644
--- a/ntoskrnl/include/ntoskrnl.h
+++ b/ntoskrnl/include/ntoskrnl.h
@@ -58,9 +58,13 @@
 #include <ndk/rtlfuncs.h>
 #include <ndk/sefuncs.h>
 #include <ndk/vftypes.h>
+
 #undef TEXT
 #define TEXT(s) L##s
+
+#define _IN_KERNEL_
 #include <regstr.h>
+
 #include <ntstrsafe.h>
 #include <ntpoapi.h>
 #define ENABLE_INTSAFE_SIGNED_FUNCTIONS
diff --git a/ntoskrnl/ntos.cmake b/ntoskrnl/ntos.cmake
index eb6cfa817c3..2284563e436 100644
--- a/ntoskrnl/ntos.cmake
+++ b/ntoskrnl/ntos.cmake
@@ -11,7 +11,6 @@ include_directories(
 add_definitions(
     -D_NTOSKRNL_
     -D_NTSYSTEM_
-    -D_IN_KERNEL_
     -DNTDDI_VERSION=0x05020400)
 
 if(NOT DEFINED NEWCC)