diff --git a/threads-api/main-signal-cv.c b/threads-api/main-signal-cv.c
index 4ac48937..8333b450 100644
--- a/threads-api/main-signal-cv.c
+++ b/threads-api/main-signal-cv.c
@@ -50,6 +50,7 @@ int main(int argc, char *argv[]) {
     Pthread_create(&p, NULL, worker, NULL);
     signal_wait(&s);
     printf("this should print last\n");
+    Pthread_join(p, NULL);
 
     return 0;
 }