diff --git a/src/win/thread.c b/src/win/thread.c
index d66e40aa4..aecfaf4f8 100644
--- a/src/win/thread.c
+++ b/src/win/thread.c
@@ -242,6 +242,7 @@ int uv_sem_trywait(uv_sem_t* sem) {
     return -1;
 
   abort();
+  return -1; /* Satisfy the compiler. */
 }