diff --git a/Makefile.in b/Makefile.in
index 04fb4834a9..df336c906b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -113,8 +113,6 @@ XRUBY_LIBDIR = @XRUBY_LIBDIR@
 XRUBY_RUBYLIBDIR = @XRUBY_RUBYLIBDIR@
 XRUBY_RUBYHDRDIR = @XRUBY_RUBYHDRDIR@
 
-DEFAULT_PRELUDES = $(GEM_PRELUDE)
-
 #### End of system configuration section. ####
 
 MAJOR=	@MAJOR@
diff --git a/common.mk b/common.mk
index 72c9905fa8..6dc1129e3c 100644
--- a/common.mk
+++ b/common.mk
@@ -109,6 +109,7 @@ ALLOBJS       = $(NORMALMAINOBJ) $(MINIOBJS) $(COMMONOBJS) $(DMYEXT)
 
 GOLFOBJS      = goruby.$(OBJEXT) golf_prelude.$(OBJEXT)
 
+DEFAULT_PRELUDES = $(GEM_PRELUDE)
 PRELUDE_SCRIPTS = $(srcdir)/prelude.rb $(srcdir)/enc/prelude.rb $(DEFAULT_PRELUDES)
 GEM_PRELUDE = $(srcdir)/gem_prelude.rb
 PRELUDES      = prelude.c miniprelude.c
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index e4e14e56e9..9cc12e3778 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -295,7 +295,6 @@ BTESTRUBY = $(MINIRUBY)
 !ifndef RUBY
 RUBY = ruby
 !endif
-DEFAULT_PRELUDES = $(GEM_PRELUDE)
 
 DTRACE_EXT = dmyh