diff --git a/zsnes/src/configure.in b/zsnes/src/configure.in
index b7b56116..3ed6ac01 100644
--- a/zsnes/src/configure.in
+++ b/zsnes/src/configure.in
@@ -69,8 +69,8 @@ AM_PATH_SDL(1.2.0,,[AC_MSG_ERROR(SDL >= 1.2.0 is required)])
 AM_PATH_ZLIB(1.1.0,,[AC_MSG_ERROR(ZLIB >= 1.1.0 is required)])
 AM_PATH_LIBPNG(1.0.0,,)
 
-CFLAGS="$CFLAGS $SDL_CFLAGS $ZLIB_CFLAGS $LIBPNG_CFLAGS"
-LDFLAGS="$LDFLAGS $SDL_LIBS $ZLIB_LIBS $LIBPNG_LIBS"
+CFLAGS="$CFLAGS $ZLIB_CFLAGS"
+LDFLAGS="$LDFLAGS $ZLIB_LIBS"
 
 if test x$with_libpng != xyes; then
         CFLAGS="$CFLAGS -DNO_PNG"