diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index d10e82986c..91c839234e 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -291,11 +291,7 @@ BTESTRUBY = $(MINIRUBY)
 !ifndef RUBY
 RUBY = ruby
 !endif
-!if "$(USE_RUBYGEMS)" == "NO"
-DEFAULT_PRELUDES = $(NO_GEM_PRELUDE)
-!else
-DEFAULT_PRELUDES = $(YES_GEM_PRELUDE)
-!endif
+DEFAULT_PRELUDES = $(GEM_PRELUDE)
 
 DTRACE_EXT = dmyh