1 files changed, 2 insertions, 0 deletions
diff --git a/zutil.c b/zutil.c
index 049454d..ff9e8fa 100644
--- a/zutil.c
+++ b/zutil.c
@@ -26,10 +26,12 @@ const char * const z_errmsg[10] = {
 const char zlibng_string[] =
    " zlib-ng 1.9.9 forked from zlib 1.2.11 ";
 
+#ifdef ZLIB_COMPAT
 const char * ZEXPORT zlibVersion(void)
 {
     return ZLIB_VERSION;
 }
+#endif
 
 const char * ZEXPORT zlibng_version(void)
 {