diff --git a/nbase/nbase.h b/nbase/nbase.h
index dd45856a6..c6cf17e74 100644
--- a/nbase/nbase.h
+++ b/nbase/nbase.h
@@ -378,7 +378,7 @@ char *socket_strerror(int errnum);
 /* The usleep() function is important as well */
 #ifndef HAVE_USLEEP
 #if defined( HAVE_NANOSLEEP) || defined(WIN32)
-void usleep(unsigned long usec);
+int usleep(unsigned long usec);
 #endif
 #endif
 
diff --git a/nbase/nbase_time.c b/nbase/nbase_time.c
index 16e2d835a..93b321047 100644
--- a/nbase/nbase_time.c
+++ b/nbase/nbase_time.c
@@ -72,14 +72,15 @@
 #endif
 
 #ifndef HAVE_USLEEP
-void usleep(unsigned long usec) {
+int usleep(unsigned long usec) {
 #ifdef HAVE_NANOSLEEP
 struct timespec ts;
 ts.tv_sec = usec / 1000000;
 ts.tv_nsec = (usec % 1000000) * 1000;
-nanosleep(&ts, NULL);
+return nanosleep(&ts, NULL);
 #else /* Windows style */
  Sleep( usec / 1000 );
+ return 0;
 #endif /* HAVE_NANOSLEEP */
 }
 #endif