diff --git a/pcsxr/configure.ac b/pcsxr/configure.ac

index 300bb18..128b4f9 100644

--- a/configure.ac

+++ b/configure.ac

@@ -113,6 +113,9 @@ if test "x$have_xtest" = xno; then

 	AC_MSG_ERROR([unable to find xtest headers])

 fi

+AC_CHECK_LIB(z, uncompress2,

+[ AC_DEFINE([HAVE_UNCOMPRESS2], [1], [Define if libz supports uncompress2]) ])

+

 AM_CONDITIONAL(USE_LIBCDIO, false)

 AC_ARG_ENABLE(libcdio, [  --enable-libcdio        use GNU libcdio for CD-ROM support (default=no)],

diff --git a/pcsxr/libpcsxcore/cdriso.c b/pcsxr/libpcsxcore/cdriso.c

index 04e866d..fb7f28a 100644

--- a/libpcsxcore/cdriso.c

+++ b/libpcsxcore/cdriso.c

@@ -1219,6 +1219,7 @@ static int cdread_sub_mixed(FILE *f, unsigned int base, void *dest, int sector)

 	return ret;

 }

+#ifndef HAVE_UNCOMPRESS2

 static int uncompress2(void *out, unsigned long *out_size, void *in, unsigned long in_size)

 {

 	static z_stream z;

@@ -1249,6 +1250,7 @@ static int uncompress2(void *out, unsigned long *out_size, void *in, unsigned lo

 	*out_size -= z.avail_out;

 	return ret == 1 ? 0 : ret;

 }

+#endif

 static int cdread_compressed(FILE *f, unsigned int base, void *dest, int sector)

 {