diff --git a/panda/src/rocket/rocketRegion_ext.h b/panda/src/rocket/rocketRegion_ext.h
index 28a4c203b7..2268a445c6 100644
--- a/panda/src/rocket/rocketRegion_ext.h
+++ b/panda/src/rocket/rocketRegion_ext.h
@@ -32,6 +32,7 @@
 template<>
 class Extension<RocketRegion> : public ExtensionBase<RocketRegion> {
 public:
+  PyObject *get_context() const;
 };
 
 #endif  // HAVE_PYTHON