diff --git a/polyp/util.c b/polyp/util.c
index 67eaeda1f..a05e601d8 100644
--- a/polyp/util.c
+++ b/polyp/util.c
@@ -37,11 +37,14 @@
 #include <signal.h>
 #include <pthread.h>
 #include <sys/time.h>
-#include <sched.h>
 #include <sys/resource.h>
 #include <limits.h>
 #include <unistd.h>
 
+#ifdef HAVE_SCHED_H
+#include <sched.h>
+#endif
+
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif