diff --git a/src/thread.c b/src/thread.c

index 98af25b..f2acaa9 100644

--- a/src/thread.c

+++ b/src/thread.c

@@ -159,6 +159,13 @@ iBool isFinished_Thread(const iThread *d) {

}



const iString *name_Thread(const iThread *d) {

+ if (!d) {

+ static iString *name_;

+ if (!name_) {

+ name_ = newCStr_String("main thread");

+ }

+ return name_;

+ }

 return &d->name;

}