diff --git a/fuzzing/PerMessageDeflate.cpp b/fuzzing/PerMessageDeflate.cpp
index f16796e..2d2b512 100644
--- a/fuzzing/PerMessageDeflate.cpp
+++ b/fuzzing/PerMessageDeflate.cpp
@@ -14,7 +14,7 @@ struct StaticData {
     uWS::ZlibContext zlibContext;
 
     uWS::InflationStream inflationStream;
-    uWS::DeflationStream deflationStream;
+    uWS::DeflationStream deflationStream = DEDICATED_COMPRESSOR_8KB;
 } staticData;
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {