diff --git a/dtool/src/interrogate/interfaceMakerPythonNative.h b/dtool/src/interrogate/interfaceMakerPythonNative.h
index 8b18ef1957..c667ab22fa 100644
--- a/dtool/src/interrogate/interfaceMakerPythonNative.h
+++ b/dtool/src/interrogate/interfaceMakerPythonNative.h
@@ -121,7 +121,7 @@ private:
   public:
     std::string _answer_location;
     WrapperType _wrapper_type;
-    int _min_version;
+    int _min_version = 0;
     std::string _wrapper_name;
     std::set<FunctionRemap*> _remaps;
     bool _keep_method;