diff --git a/src/Base/swigpyrun.inl b/src/Base/swigpyrun.inl
index 65bba62db3c6..3f0e10479c7a 100644
--- a/src/Base/swigpyrun.inl
+++ b/src/Base/swigpyrun.inl
@@ -71,7 +71,6 @@ void cleanupSWIG_T(const char* TypeName)
         return;
 
     PyObject *module, *dict;
-    PyInterpreterState *interp = PyThreadState_GET()->interp;
     PyObject *modules = PyImport_GetModuleDict();
     module = PyDict_GetItemString(modules, "__builtin__");
     if (module != NULL && PyModule_Check(module)) {