diff --git a/src/log.h b/src/log.h
index 1b928b2..1db1a38 100644
--- a/src/log.h
+++ b/src/log.h
@@ -1,7 +1,7 @@
 #pragma once
 
 #include <cstdio>
-#include <cstdlib>
+#include <unistd.h>
 
 #define ERR(format, ...) \
     ({ \