diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 11bcee6e6f..cbf2acd270 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -910,6 +910,7 @@ s,@sitearchincludedir@,$${includedir}/$${sitearch},;t t
 s,@arch@,$(ARCH)-$(PLATFORM),;t t
 s,@sitearch@,$(ARCH)-$(RT),;t t
 s,@ruby_version@,$(ruby_version),;t t
+s,@RUBY_PROGRAM_VERSION@,$(ruby_version),;t t
 s,@rubylibprefix@,$${prefix}/lib/$${RUBY_BASE_NAME},;t t
 s,@rubyarchdir@,$${rubylibdir}/$${arch},;t t
 s,@rubylibdir@,$${rubylibprefix}/$${ruby_version},;t t