diff --git a/src/hotspot/share/opto/idealGraphPrinter.cpp b/src/hotspot/share/opto/idealGraphPrinter.cpp
index de0fcbc8f31..9a35691f7ff 100644
--- a/src/hotspot/share/opto/idealGraphPrinter.cpp
+++ b/src/hotspot/share/opto/idealGraphPrinter.cpp
@@ -161,6 +161,7 @@ void IdealGraphPrinter::init(const char* file_name, bool use_multiple_files, boo
   _current_method = nullptr;
   _network_stream = nullptr;
   _append = append;
+  _parse = nullptr;
 
   if (file_name != nullptr) {
     init_file_stream(file_name, use_multiple_files);