diff --git a/ext/zlib/php_zlib.def b/ext/zlib/php_zlib.def
index a47cbc10cae..d1fab315ae2 100644
--- a/ext/zlib/php_zlib.def
+++ b/ext/zlib/php_zlib.def
@@ -19,6 +19,7 @@ EXPORTS
     inflateSync
     inflateCopy
     inflateReset
+    inflateReset2
     inflateBack
     inflateBackEnd
     zlibCompileFlags