diff --git a/wrapper.c b/wrapper.c
index f698594..4a792f5 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -8,6 +8,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
+#include <sched.h>
 
 pid_t child_proc = -1;