diff --git a/Docs/src/usefulfunc.but b/Docs/src/usefulfunc.but
index f5023781..7c8115e5 100644
--- a/Docs/src/usefulfunc.but
+++ b/Docs/src/usefulfunc.but
@@ -409,7 +409,7 @@
 \c    ;Register the DLL on reboot
 \c  
 \c    !ifndef UPGRADEDLL_NOREGISTER
-\c      WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\RunOnce" "Register ${DESTFILE}" '"$SYSDIR\regsvr32.exe" /s "${DESTFILE}"'
+\c      WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\RunOnce" "Register ${DESTFILE}" '"$SYSDIR\rundll32.exe" "${DESTFILE},DllRegisterServer"'
 \c    !endif
 \c
 \c    Goto "done_${LOCALFILE}"