diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index bb149629c92f2f..31241e10c391db 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -541,6 +541,7 @@ class ZCtx : public AsyncWrap {
         delete[] dictionary;
         ctx->dictionary_ = nullptr;
       }
+      ctx->mode_ = NONE;
       ctx->env()->ThrowError("Init error");
     }
   }