diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 9a53df235d0..f518c98d423 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -63,7 +63,8 @@ class ZCtx : public ObjectWrap {
   ~ZCtx() {
     if (mode_ == DEFLATE || mode_ == GZIP || mode_ == DEFLATERAW) {
       (void)deflateEnd(&strm_);
-    } else if (mode_ == INFLATE || mode_ == GUNZIP || mode_ == INFLATERAW) {
+    } else if (mode_ == INFLATE || mode_ == GUNZIP || mode_ == INFLATERAW ||
+               mode === UNZIP) {
       (void)inflateEnd(&strm_);
     }