diff --git a/src/3rdparty/zlib/zconf.h b/src/3rdparty/zlib/zconf.h
index dc52489bc2..d01f20bc07 100644
--- a/src/3rdparty/zlib/zconf.h
+++ b/src/3rdparty/zlib/zconf.h
@@ -107,6 +107,7 @@
 #  define zcfree                z_zcfree
 #  define zlibCompileFlags      z_zlibCompileFlags
 #  define zlibVersion           z_zlibVersion
+#  define z_errmsg              z_z_errmsg
 
 /* all zlib typedefs in zlib.h and zconf.h */
 #  define Byte                  z_Byte