diff --git a/Makefile b/Makefile
index ed2744c2..a98fd165 100644
--- a/Makefile
+++ b/Makefile
@@ -19,6 +19,7 @@ else
 ifeq ($(shell uname -o),Msys)
 PLATFORM=mingw
 SOLIBDIR = $(BINDIR)
+DIFFOPTS = -b
 else
 PLATFORM=unix
 endif
@@ -92,7 +93,7 @@ cleaner: clean
 test-basic: chibi-scheme$(EXE)
 	@for f in tests/basic/*.scm; do \
 	    ./chibi-scheme$(EXE) $$f >$${f%.scm}.out 2>$${f%.scm}.err; \
-	    if diff -q $${f%.scm}.out $${f%.scm}.res; then \
+	    if diff -q $(DIFFOPTS) $${f%.scm}.out $${f%.scm}.res; then \
 	        echo "[PASS] $${f%.scm}"; \
 	    else \
 	        echo "[FAIL] $${f%.scm}"; \
diff --git a/sexp.c b/sexp.c
index dfaca5a1..d5a63443 100644
--- a/sexp.c
+++ b/sexp.c
@@ -2,7 +2,6 @@
 /*  Copyright (c) 2009 Alex Shinn.  All rights reserved. */
 /*  BSD-style license: http://synthcode.com/license.txt  */
 
-#define SEXP_API
 #include "chibi/sexp.h"
 
 /* optional huffman-compressed immediate symbols */