diff --git a/reactos/ntoskrnl/include/internal/cm.h b/reactos/ntoskrnl/include/internal/cm.h
index e2ce83caaa6..6b17ba3ca81 100644
--- a/reactos/ntoskrnl/include/internal/cm.h
+++ b/reactos/ntoskrnl/include/internal/cm.h
@@ -911,6 +911,12 @@ CmpConstructName(
     IN PCM_KEY_CONTROL_BLOCK Kcb
 );
 
+BOOLEAN
+NTAPI
+CmpReferenceKeyControlBlock(
+    IN PCM_KEY_CONTROL_BLOCK Kcb
+);
+
 VOID
 NTAPI
 CmpDereferenceKeyControlBlockWithLock(