diff --git a/reactos/ntoskrnl/include/internal/io.h b/reactos/ntoskrnl/include/internal/io.h
index 235ab7ffda1..ca656d2b8a0 100644
--- a/reactos/ntoskrnl/include/internal/io.h
+++ b/reactos/ntoskrnl/include/internal/io.h
@@ -583,6 +583,7 @@ IopInitializePnpServices(
     IN BOOLEAN BootDrivers);
 
 NTSTATUS
+NTAPI
 IopOpenRegistryKeyEx(
     PHANDLE KeyHandle,
     HANDLE ParentKey,
diff --git a/reactos/ntoskrnl/include/internal/mm.h b/reactos/ntoskrnl/include/internal/mm.h
index fb0cb2c0779..6ef55cb4277 100644
--- a/reactos/ntoskrnl/include/internal/mm.h
+++ b/reactos/ntoskrnl/include/internal/mm.h
@@ -1547,6 +1547,13 @@ MmCheckSystemImage(
     IN BOOLEAN PurgeSection
 );
 
+NTSTATUS
+NTAPI
+MmCallDllInitialize(
+    IN PLDR_DATA_TABLE_ENTRY LdrEntry,
+    IN PLIST_ENTRY ListHead
+);
+
 /* ReactOS Mm Hack */
 VOID
 FASTCALL
diff --git a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
index 7d5068d306a..ae63ab0c0e0 100644
--- a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
+++ b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
@@ -2669,6 +2669,7 @@ IopUpdateRootKey(VOID)
 }
 
 NTSTATUS
+NTAPI
 IopOpenRegistryKeyEx(PHANDLE KeyHandle,
                      HANDLE ParentKey,
                      PUNICODE_STRING Name,