diff --git a/configure.in b/configure.in
index 8bad2b7977..69a2a05859 100644
--- a/configure.in
+++ b/configure.in
@@ -3446,7 +3446,7 @@ AS_IF([test "$with_dln_a_out" != yes], [
 			: ${LDSHARED='$(CC) -shared'}
 			XLDFLAGS="$XLDFLAGS -Wl,--stack,0x00200000,--enable-auto-import"
 			DLDFLAGS="${DLDFLAGS} -Wl,--enable-auto-image-base,--enable-auto-import"
-			: ${LIBPATHENV=""}
+			: ${LIBPATHENV=PATH}
 			: ${PRELOADENV=""}
 			rb_cv_dlopen=yes],
 	[hiuxmpp], [	: ${LDSHARED='$(LD) -r'}],
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 3a9e54460c..cf035eae6c 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -917,6 +917,8 @@ s,@OUTFLAG@,$(OUTFLAG),;t t
 s,@COUTFLAG@,$(COUTFLAG),;t t
 s,@CSRCFLAG@,$(CSRCFLAG),;t t
 s,@CPPOUTFILE@,-P,;t t
+s,@PRELOADENV@,,;t t
+s,@LIBPATHENV@,PATH,;t t
 s,@LIBPATHFLAG@, -libpath:%s,;t t
 s,@RPATHFLAG@,,;t t
 s,@LIBARG@,%s.lib,;t t